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  • find and correct the errors in the following mathematical statements (2a +3b ) (a- b) =2 a ^2 - 3 b^2

Find and correct the errors in the following mathematical statements.

Q13)

( 2a +3b ) ( a-b) = 2 a ^2 - 3 b^2

Answers (1)

best_answer

Our L.H.S. is  (2a + 3b)(a -b)
                   = 2a^{2} -2ab + 3ab - 3b^{2}
                   = 2a^{2} +ab - 3b^{2}   \neq   R.H.S.
Correct statement is  (2a + 3b)(a -b) = 2a^{2} +ab - 3b^{2}

Posted by

Gautam harsolia

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