Math, asked by benx3843, 1 year ago

Q. No 12 a
. B. C. D

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Answers

Answered by cutebaby071
3
a) (abc-2) (abc-1)=(x+a)(x+b)
c)(1000+1)^2=(a+b) whole square
d)(200-3)(200+3)=(a+b)(a-b)

Identity I: (a + b)2 = a2 + 2ab + b2

Identity II: (a – b)2 = a2 – 2ab + b2

Identity III: a2 – b2= (a + b)(a – b)

Identity IV: (x + a)(x + b) = x2 + (a + b) x + ab

Identity V: (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca

Identity VI: (a + b)3 = a3 + b3 + 3ab (a + b)

Identity VII: (a – b)3 = a3 – b3 – 3ab (a – b)

Identity VIII:     a3 + b3 + c3 – 3abc = (a + b + c)(a2 + b2 + c2 – ab – bc – ca


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