Question

2(-2)cube-3(-2) square+4(-2)+7

Answer 1

2(-8)-3(4)-8+7
-16-12-8+7
-36+7
-29. Answer

Hope It help you

Answer 2

The value of the given expression $2(-2)^3-3(-2)^2+4(-2)+7$ is -29.

Given,

Expression:

$2(-2)^3-3(-2)^2+4(-2)+7.$

To find,

Value of given expression.

Solution,

Here, the given expression is

$2(-2)^3-3(-2)^2+4(-2)+7.$

Let the above expression be represented by x, so that,

$x=2(-2)^3-3(-2)^2+4(-2)+7 \hfill ...(1)$

We can determine the value of the given expression simply by simplifying the above equation (1).

So, simplifying (1),

$x=2(-8)-3(4)+4(-2)+7 \hfill [\because (-2)^3=-8,(-2)^2=4]$

$\implies x=-16-12-8+7$

$\implies x=-16-12-8+7$

$\implies x=-36+7$

$\implies x=-29.$

⇒ the value of given expression = -29.

Therefore, the value of the given expression $2(-2)^3-3(-2)^2+4(-2)+7$ is -29.

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