Math, asked by harshama, 3 months ago

Find the area of a square with side (21+mn) units.

Answers

Answered by ritanmay2007

5

Answer:

(21+mn) × (21+mn)

=21(21+mn) +mn(21+mn)

=441+21mn+21mn+mn2

=441+42mn+mn2

it is the area of that square

Answered by Anonymous

21

Step-by-step explanation:

(21+ mn ) + ( 21 + mn)

= 21 ( 21 + mn ) + mn ( 21 + mn )

= 441+21 mn + 21 mn + mn2

= 441 + 42 mn + mn 2

it is the area of the square.

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