Question

15 times the square of a non zero number is equal to 20 times the number

Answer 1

\[15x^2=20x\]

Answer 2

Solve for x over the real numbers:
15 x^2 = 20 x

Subtract 20 x from both sides:
15 x^2-20 x = 0

Factor x and constant terms from the left hand side:
5 x (3 x-4) = 0

Divide both sides by 5:
x (3 x-4) = 0

Split into two equations:
x = 0 or 3 x-4 = 0

Add 4 to both sides:
x = 0 or 3 x = 4

Divide both sides by 3:
Answer: |
| x = 0 or x = 4/3