Math, asked by anushkadam3888, 5 months ago

simplify (7m-6n)^2 (7m+6n)^2

Answers

Answered by Anonymous
15

Answer

Given, (7m−8n)

2

+(7m+8n)

2

.

We know, (a−b)

2

=a

2

−2ab+b

2

and (a+b)

2

=a

2

+2ab+b

2

.

Then,

(7m−8n)

2

+(7m+8n)

2

=[(7m)

2

−2(7m)(8n)+(8n)

2

]+[(7m)

2

+2(7m)(8n)+(8n)

2

]

=(49m

2

−112mn+64n

2

)+(49m

2

+112mn+64n

2

)

=49m

2

−112mn+64n

2

+49m

2

+112mn+64n

2

=98m

2

+128n

2

.

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