Question

Find the value of x² + 2x + x³ at x=2

Answer 1

following are the steps for getting the answer:

Given:

x² + 2x + x³

x=2

To find:

x² + 2x + x³=?

Solution:

we have to find the value of x² + 2x + x³

the value of x is given

put x=2 in the x² + 2x + x³

so we get,

=2² +2×2+2³

expand it

=2×2+2×2+2×2×2

=4+4+8

=16

Thus, the value of  x² + 2x + x³ is 16

Answer 2

Given,

$x^{2} +2x+x^{3}$ at $x=2$

We have to find the value of given expression by substitute $2$ in the place of $x$

Now, we have to take $x$ common from the given expression

$x(x+2+x^{2} )$

Now, substitute $x=2$ in above expression,

$x(x+2+x^{2} )$

$= 2(2+2+2^{2} )$

$= 2(4+4)$

$= 2(8)$

$=16$

Therefore, the value of $x^{2} +2x+x^{3}$ is $16$.