Question

X3 − 2y2 − 3x3 + z4 if x = 3, y = 5, and z = −3

Answer 1

(3)^3 - 2(5)^2 - 3(3)^3 + -3^4
27-100-729-81 =
-883

Answer 2

The value of the expression for the given values of x,y and z is:

-23

Explanation:

The algebraic expression is given by:

`x^3-2y^2-3x^3+z^4`

We are asked to evaluate the value of the expression when

`x=3\ ,\ y=5\  and\ z=-3`

Now, putting these values in the given expression we have:

`=3^3-2(5)^2-3(3)^3+(-3)^4\\\\=3^3-2(5)^2-(3)^4+(3)^4\\\\=27-2* 25+0\\\\=27-50\\\\=-23`

Hence, the answer is: -23