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Integration by Substitution

If x=4, evalu...

Question

If $x = 4$ , evaluate:
(ii) $x^{2} - 2 x$

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Solution

Given: $x^{2} - 2 x$
Substituting $x = 4$ in the given expression
$x^{2} - 2 x = 4^{2} - 2 \times 4$
$= 16 - 8$
$= 8$
Hence, the value of $x^{2} - 2 x$ for $x = 4$ is $8$ .

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Integration by Substitution

Standard XII Mathematics

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