Question

If p=-2 find the value of -2p3-3p2+4p+7​

Answer 1

• We have to evaluate the above expression by using the given data.

              Given data:- $p=-2.$

              To find:- $-2 p 3-3 p 2+4 p+7.$

              Solution:-

• To solve the above equation we will follow the BODMAS rule.

• BODMAS is an order of mathematic operations.

• BODMAS rule is to be followed while solving expressions in mathematics. It stands for,

             B= bracket

             O= order of power or rules

             D= division

             M= multiplication

             A= addition

             S= subtraction

         Now put the value p=-2 in the given equation we get,

            $-2p3-3p2+4p+7\\=-2\times(-2)\times3-3\times(-2)\times2+4\times(-2)+7\\=12-(-12)+(-1)\\=23$

          Hence we will get the value $23.$

Answer 2

In context to question asked,

We have to determine the value of given expression $-2p^3-3p^2+4p+7$ when the value of p = -2.

So, for determining the value of given expression,

We will put the value of p = -2 in place of p in the above given expression.

Thus we will get it as,

$-2p^3-3p^2+4p+7\\=>-2(-2)^3-3(-2)^2+4(-2)+7\\=>(-2 \times -8) - (3\times 4) +(4\times -2)+7\\=>16-12-8+7\\=>3$

Hence, value of given expression $-2p^3-3p^2+4p+7$ when the value of p = -2 will be 3.