Show that (3x + 7)2 - 84x = (3x – 7)
Answers
Answered by
0
LHS
(3x+7)^2-84x
={(3x)^+(7)^+2(3x)(7)}-84x
=9x^2+49+42x-84x
=9x^2+49-42x
=(3x)^+(7)^-2(3x)(7)
=(3x-7)^2
RHS
(3X-7)^2
As LHS=RHS, Hence proved.
Pls mark as brainliest(as you get 25% of the pts if u do)
Similar questions