Algebra Formulas collection

  1. (a+b)2 = a2 + b2 + 2ab
  2. (a-b)2 = a2 + b2 – 2ab
  3. (a+b) (a-b) = a2 – b2
  4. (x + a)(x + b) = x2 + (a + b)x + ab
  5. (x + a)(x – b) = x2 + (a – b)x – ab
  6. (a + b)3 = a3 + b3 + 3ab(a + b)
  7. (a – b)3 = a3 – b3 – 3ab(a – b)
  8. (x – a)(x + b) = x2 + (b – a)x – ab
  9. (x – a)(x – b) = x2 – (a + b)x + ab
  10. (x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2xz
  11. (x + y – z)2 = x2 + y2 + z2 + 2xy – 2yz – 2xz
  12. (x – y + z)2 = x2 + y2 + z2 – 2xy – 2yz + 2xz
  13. (x – y – z)2 = x2 + y2 + z2 – 2xy + 2yz – 2xz
  14. x3 + y3 + z3 – 3xyz = (x + y + z)(x2 + y2 + z2 – xy – yz -xz)
  15. x2 + y2 =½ [(x + y)2 + (x – y)2]
  16. (x + a) (x + b) (x + c) = x3 + (a + b +c)x2 + (ab + bc + ca)x + abc
  17. x3 + y3= (x + y) (x2 – xy + y2)
  18. x3 – y3 = (x – y) (x2 + xy + y2)
  19. x2 + y2 + z2 -xy – yz – zx = ½ [(x-y)2 + (y-z)2 + (z-x)2]


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Sacred Games 2 Leaked

Description of  Scared Game 2

The second season of Sacred Games will pick up from where Sartaj Singh, played by Saif Ali Khan, and Ganesh Gaitonde left the game incomplete. Sartaj will learn that there are bigger twists in the game that lies ahead of him and will perhaps deal with the dilemma the trailer ends with - "Is the city worth saving?"

Click on below description to download

https://drive.google.com/open?id=1vm4lim2nywQJrp7w5fmbLRoOfbQAyh5t
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UPSC ESE / IES 2019 (Prelims Exam) Question paper & Key

ESE GENERAL STUDIES ENGINEERING APTITUDE 2019


GATE 2019 CUT-OFF



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GATE CUT-OFF 2018 & 2019

Happy searching http://physicsknowledge06.blogspot.com/


2018


2019


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GATE 2019 CUT-OFF

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ESE PRE CIVIL ENGINEERING 2019

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ELECTRICAL ENGINEERING 2019

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ESE PRE ELECTRONICS TELECOMMUNICATION ENGINEERING 2019

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ESE PRE MECHANICAL ENGINEERING PAPER 2019

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ESE GENERAL STUDIES ENGINEERING APTITUDE 2019

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Algebra Formulas collection

(a+b) 2  = a 2  + b 2  + 2ab (a-b) 2  = a 2  + b 2  – 2ab (a+b) (a-b) = a 2  – b 2 (x + a)(x + b) = x 2  + (a + b)x + ab (x + a)(x – b) = x ...