x(x+8x)=144

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Solution for x(x+8x)=144 equation: 


Simplifying
x(x + 8x) = 144

Combine like terms: x + 8x = 9x
x(9x) = 144

Remove parenthesis around (9x)
x * 9x = 144

Reorder the terms for easier multiplication:
9x * x = 144

Multiply x * x
9x2 = 144

Solving
9x2 = 144

Solving for variable 'x'.

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

Divide each side by '9'.
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}

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