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Question

If a=2then the value of -6a2is


A

(a) 24

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B

(b) -24

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C

(c) 12

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D

(d) -2

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Solution

The correct option is B

(b) -24


The given algebraic expression can be written as

-6a2=-6×a×a

Substituting a=2, we get :

-6a2=-6×2×2=-12×2=-24

Hence , Option (b) is the correct answer


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