1. (α+в)²= α²+2αв+в² 2. (α+в)²= (α-в)²+4αв 3. (α-в)²= α²-2αв+в² 4. (α-в)²= (α+в)²-4αв 5. α² + в²= (α+в)² - 2αв. 6. α² + в²= (α-в)² + 2αв. 7. α²-в² =(α + в)(α - в) 8. 2(α² + в²) = (α+ в)² + (α - в)² 9. 4αв = (α + в)² -(α-в)² 10. αв ={(α+в)/2}²-{(α-в)/2}² 11. (α + в + ¢)² = α² + в² + ¢² + 2(αв + в¢ + ¢α) 12. (α + в)³ = α³ + 3α²в + 3αв² + в³ 13. (α + в)³ = α³ + в³ + 3αв(α + в) 14. (α-в)³=α³-3α²в+3αв²-в³ 15. α³ + в³ = (α + в) (α² -αв + в²) 16. α³ + в³ = (α+ в)³ -3αв(α+ в) 17. α³ -в³ = (α -в) (α² + αв + в²) 18. α³ -в³ = (α-в)³ + 3αв(α-в) 👇👇👇👇9th,10th,11th,12th. » B. A. — Bachelor of Arts. » M. A. — Master of Arts. »B.tech - Bachelor of Technology » B. Sc. — Bachelor of Science » M. Sc. — Master of Science » B. Sc. Ag. — Bachelor of Science in Agriculture » M. Sc. Ag. — Master of Science in Agriculture » M. B. B. S. — Bachelor of Medicine and Bachelor of Surgery » B.A.M.S- Bachelor of Ayurved Medicine and surgery » M. D. — Doctor of Medicine » M. S. — Master of Surgery » Ph. D. / D. Phil. — Doctor of Philosophy (Arts & Science) » D. Litt./Lit. — Doctor of Literature / Doctor of Letters » D. Sc. — Doctor of Science » B. Com. — Bachelor of Commerce » M. Com. — Master of Commerce » Dr. — Doctor » B. P. — Blood Pressure » Mr. — Mister » Mrs. — Mistress » M.S. — miss (used for female married & unmarried) » Miss — used before unmarried girls) » M. P. — Member of Parliament » M. L. A. — Member of Legislative Assembly » M. L. C. — Member of Legislative Council » P. M. — Prime Minister » C. M. — Chief Minister » C-in-C — Commander-In-Chief » L. D. C. — Lower Division Clerk » U. D. C. — Upper Division Clerk » Lt. Gov. — Lieutenant Governor » D. M. — District Magistrate » V. I. P. — Very Important Person » I. T. O. — Income Tax Officer » C. I. D. — Criminal Investigation Department » C/o — Care of » S/o — Son of » C. B. I. — Central Bureau of Investigation » G. P. O. — General Post Office » H. Q. — Head Quarters » E. O. E. — Errors and Omissions Excepted » Kg. — Kilogram » KW. — Kilowatts 👉Gm. — Gram 👉Km. — Kilometer 👉Ltd. — Limited 👉M. P. H. — Miles Per Hour 👉KM. P. H. — Kilometre Per Hour 👉P. T. O. — Please Turn Over 👉P. W. D. — Public Works Department 👉C. P. W. D. — Central Public Works Department 👉Y. S. D. — United States of Sanjer pur 👉P. K. — United Kingdom (Pakistan) 👉U. N. O. — United Nations Organization 👉W. H. O. — World Health Organization 👉B. B. C. — British Broadcasting Corporation 👉B. C. — Before Christ 👉A. C. — Air Conditioned 👉I. G. — Inspector General (of Police) 👉D. I. G. — Deputy Inspector General (of Police) 👉S. S. P. — Senior Superintendent of Police 👉D. S. P. — Deputy Superintendent of Police 👉S. D. M. — Sub-Divisional Magistrate 👉S. M. — Station Master 👉A. S. M. — Assistant Station Master 👉V. C. — Vice-Chancellor 👉A. G. — Accountant General 👉C. R. — Confidential Report 👉P. A. S. — pakistan Administrative Service 👉P. P. S. — Pakista Police Service 👉P. F. S. — P Foreign Service or Pakistan Forest Service 👉Pakistan. R. S. — Pakistan Revenue Service 👉P. C. S. — Provincial Civil Service 👉M. E. S. — Military Engineering Service ☀Full Form Of Some technical Words » VIRUS - Vital Information Resource Under Seized. » 3G -3rd Generation. » GSM - Global System for Mobile Communication. » CDMA - Code Division Multiple Access. » UMTS - Universal Mobile Telecommunication System. » SIM - Subscriber Identity Module . » AVI = Audio Video Interleave » RTS = Real Time Streaming » SIS = Symbian OS Installer File » AMR = Adaptive Multi-Rate Codec » JAD = Java Application Descriptor » JAR = Java Archive » JAD = Java Application Descriptor » 3GPP = 3rd Generation Partnership Project » 3GP = 3rd Generation Project » MP3 = MPEG player-3 » MP4 = MPEG-4 video file » AAC = Advanced Audio Coding » GIF= Graphic Interchangeable Format » JPEG = Joint Photographic Expert Group » BMP = Bitmap » SWF = Shock Wave Flash » WMV = Windows Media Video » WMA = Windows Media Audio » WAV = Waveform Audio » PNG = Portable Network Graphics » DOC =Document (Microsoft Corporation) » PDF = Portable Document Format » M3G = Mobile 3D Graphics » M4A = MPEG-4 Audio File » NTH = Nokia Theme (series 40) » THM = Themes (Sony Ericsson) » MMF =Synthetic Music Mobile Application File » NRT = Nokia Ringtone » XMF = Extensible Music File » WBMP = Wireless Bitmap Image » DVX = DivX Video » HTML = Hyper Text Markup Language » WML =Wireless Markup Language » CD -Compact Disk. » DVD - Digital Versatile Disk. » CRT - Cathode Ray Tube. » DAT - Digital Audio Tape. » DOS - Disk Operating System. » GUI -Graphical User Interface. » HTTP - Hyper Text Transfer Protocol. » IP - Internet Protocol. » ISP - Internet Service Provider. » TCP - Transmission Control Protocol. » UPS - Uninterruptible Power Supply. » HSDPA -High Speed Downlink Packet Access. » EDGE - Enhanced Data Rate for Evolution. » GSM- [Global System for Mobile Communication] » VHF - Very High Frequency. » UHF - Ultra HighFrequency. » GPRS - General Packet Radio Service. » WAP - Wireless Application Protocol. » TCP - Transmission Control Protocol. » ARPANET - Advanced Research Project Agency Network. » IBM - International Business Machines. » HP - Hewlett Packard.