Question

Evaluate each expression for the given values of the variables 5X + 2Y^2-Y^3; x = 2 and y=4

Answer 1

We are given the expression:

$5x+2y^{2}-y^{3}$

Now we have to determine the value of this expression at x=2 and y=4.

So let us plug the values of x and y in the expression:

$5(2)+2(4)^{2}-(4)^{3}$

$=10+32-64$

=-22

So on plugging x=2 and y=4 in the given expression we get the value as -22

Answer : $5x+2y^{2}-y^{3}$=-22