Question

pls help me ....................................

Answer 1

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(13th) QUESTION :

the length of the side of a square is ( 5x + 11 )cm . then find the area of square.

SOLUTION :

we know the area of square =>

=> S × S = S²

A side is given about 5x +11 cm

therefore,

=> ( 5x + 11 ) (5x + 11 )

=> 5x ( 5x + 11 ) +11 ( 5x + 11 )

=> 25x² +55x +55x + 121

=> 25x² + 110x + 121