Q1 of 105 Page 280

Find the errors and correct the following mathematical sentences

(2x)2 + 5x = 4x + 5x = 9x

If LHS is


(2x)2 + 5x


Then RHS would be


⇒ (2x)2 + 5x


= 22 × x2 + 5x


= 4x2 + 5x


The error is 4x2 instead of 4x


Hence (2x)2 + 5x = 4x2 + 5x


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