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Sequence

If a = 5 , b ...

Question

If $a = 5, b = 6$ , evaluate
(iii) $2 b^{2}$ .

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Solution

Substituting $a = 5, b = 6$ in the given expression ,

$2 b^{2} = 2 \times (6)^{2}$

$= 2 \times 36$

$= 72$
Hence, the value of $2 b^{2}$ for $a = 5, b = 6$ is $72$ .

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Q. For what values of a and b if A = B, where

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Disclaimer: There is a misprint in the question, b² − 5b should be written instead of b² − 56.

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