Question

Evaluate the following using suitable identies (7x-2y) square
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Answer 1

Answer:

2 on right side

= 2(7x-2y)

=14x-4y

xy = 14-4

xy =10

Step-by-step explanation:

Answer 2

Given,

(7x+2y) 2 =(7x) 2 +2(7x)+2(7x)(2y)+(2y) 2

(7x+2y) 2 =49x 2 +28xy+4y 2

Hope it helps