Evaluate the exponential expression $x^{5}$ × $x^{4}$ , for x = 2.

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128

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256

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512

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Solution

The correct option is D
512

$x^{5}$ × $x^{4}$ , for x = 2
Substituting 2 in place of $x$
= $2^{5}$ × $2^{4}$
= $2^{9} (∵ a^{m} \times a^{n} = a^{m + n})$ = 512

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