Please help me solve this

there is 3 problems that i need to help solve.

1) x^3 = 4x^2 + 77x

2) x^2 - 13x = -30

3) 7x^2 -5x = 14x - 10

1) x³ = 4x² + 77x.

Collect everything on one side:
x³ - 4x² - 77x = 0.
Factor out x:
x(x² - 4x - 77) = 0.
Factor the quadratic term:
x(x+7)(x-11) = 0.
Therefore x = 0 or x = -7 or x = 11.


2) x² - 13x = -30.

Collect terms:
x² - 13x + 30 = 0.
Factor:
(x-3)(x-10) = 0.
Therefore x = 3 or x = 10.


3) 7x² - 5x = 14x - 10.

Collect terms:
7x² - 19x + 10 = 0.
Factor:
(7x-5)(x-2) = 0.
Therefore x = 5/7 or x = 2.

1) factor out x giving x(x^2-4x-77) = 0
x (x-11)(x+7) = 0
x =0, -7, 11

follow my example