Solve for x (1 Viewer)

[bluboy22]

Solve for x = , 40x - 3x^2/ 3 = x(20-x)/ 3

 

[PC]

I'm assuming that this is really:
(40x - 3x^2)/ 3 = x(20-x)/ 3

This is a quadratic equation, not something you'll need to worry about in the General Course.

(40x – 3x²)/3 = x(20 – x)/3
Multiply both sides by 3.
40x – 3x² = x(20 – x)
40x – 3x² = 20x – x²
Add 3x² to both sides.
40x = 20x + 2x²
Subtract 40x from both sides.
2x² – 20x = 0
Factorise.
2x(x – 10) = 0
2x = 0 or x – 10 = 0
.: x = 0 or x = 10

 

[bluboy22]

Thanks!