Question

simply the following (8m-7n)square
+ (8m-7n)square
​

Answer 1

Answer:

(8m-7n)² + (8m-7n)². [using formula a²+b²=(a+b)²+2ab]

= {8m-7n + 8m-7n}²+2(8m-7n)(8m-7n)

={16m-14n}² + 2(64m²-56mn-56mn+49n²)

=256m²-196n² + 2(64m²-112mn+49n²)

=256m²-196n² + 128m²- 224mn + 98n²

=256m²+128m²+98n²-196n²-224mn

=384m²-98n²-224mn

384m²-98n²-224mn. Hey bro here is your answer .

And the formula is:

a²+b²

=(a+b)²+2ab