Math, asked by sethulekshmi147, 4 months ago

Show that (3x+7)2-84x=(3x-7)?

Answers

Answered by vivekchavan143

1

Answer:

Step-by-step explanation:

(3x+7)^2 - 84x

= 9x^2 + 42x + 49 - 84x

= 9x^2 - 42x + 49

(3x-7)^2

= 9x^2 - 42x + 49

(a+b)^2 - 4ab = a-b)^2

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