=x(3x+5x)

Solution for =x(3x+5x) equation:

Simplifying
0 = x(3x + 5x)

Combine like terms: 3x + 5x = 8x
0 = x(8x)

Remove parenthesis around (8x)
0 = x * 8x

Reorder the terms for easier multiplication:
0 = 8x * x

Multiply x * x
0 = 8x2

Solving
0 = 8x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8x2' to each side of the equation.
0 + -8x2 = 8x2 + -8x2
Remove the zero:
-8x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
-8x2 = 0

Divide each side by '-8'.
x2 = 0

Simplifying
x2 = 0

Take the square root of each side:
x = {0}