Question

solve : simplify (5-square 2) (5+square2)
answer with step by step pls​

Answer 1

Step-by-step explanation:

Correct option is

D

40x

(2x+5)

2

−(2x−5)

2

=4x

2

+20x+25−(4x

2

−20x+25)

=4x

2

+20x+25−4x

2

+20x−25

=40x

Answer 2

Answer:

${\huge{\pink{↬}}} \:  \: {\huge{\underline{\boxed{\bf{\pink{Answer}}}}}}$

(2x+5) ^2-(2x-5) ^2

by using identity

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

here

a=(2x+5)

b=(2x-5)

SO

(2x+5) ^2-(2x-5) ^2=[2x+5-(2x-5) ][2x+5+2x-5]

=10x4x

=40x

Hope this will help you

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