Question

Please help!
For y = 4x 2x^2 - x^3, show how to find the value for y, when x = 2 show your work

Answer 1

Since x=2, you plug it into your equation by replacing all the x with 2. You would then solve it by following the PEMDAS rule. y= 4(2) + 2(2)^2 - (2)^3 y= 4(2) +2(4) - 8 y= 8 + 8 - 8 y= 16 - 8 y= 8