CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Integration by Substitution

If x=4, evalu...

Question

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

Open in App

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 $8$ .

Suggest Corrections

thumbs-up

1

Similar questions

f (x) = |x^{2} - 9 x + 20|

, then f' (x) is equal to
(a)

- 2 x + 9 for all x \in R

2 x - 9 if 4 < x < 5

- 2 x + 9, if 4 < x < 5

(d) none of these

${lim}_{x \to 2} (\frac{x}{x - 2} - \frac{4}{x^{2} - 2 x})$

x = 4

, evaluate:
(ii)

5 x^{2} + 4 x

x = - 6

4 x^{2}

x = 10

6 x^{2} - 25 x

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Integration by Substitution

Standard XII Mathematics

Join BYJU'S Learning Program

CrossIcon