Question 198814
 {{{(40*x^3 - 5*x^2)/2 = 500}}}

GCD of 40x^3 - 5x^2 and 500 is 5

On Dividing both sides by 5, we get

 {{{(8x^3 - x^2)/2 = 100 }}}

On Cross Multiplication, we get:

8x^3 - x^2 = 200

8x^3 - x^2 - 200 = 0

Value of x are:

2.9662837858
-1.4206418929 + 2.5317643328i
-1.4206418929 - 2.5317643328i