120=(2x+1)x

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Solution for 120=(2x+1)x equation:


Simplifying
120 = (2x + 1) * x

Reorder the terms:
120 = (1 + 2x) * x

Reorder the terms for easier multiplication:
120 = x(1 + 2x)
120 = (1 * x + 2x * x)
120 = (1x + 2x2)

Solving
120 = 1x + 2x2

Solving for variable 'x'.

Reorder the terms:
120 + -1x + -2x2 = 1x + -1x + 2x2 + -2x2

Combine like terms: 1x + -1x = 0
120 + -1x + -2x2 = 0 + 2x2 + -2x2
120 + -1x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
120 + -1x + -2x2 = 0

Factor a trinomial.
(15 + -2x)(8 + x) = 0

Subproblem 1

Set the factor '(15 + -2x)' equal to zero and attempt to solve: Simplifying 15 + -2x = 0 Solving 15 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -2x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -2x = 0 + -15 -2x = 0 + -15 Combine like terms: 0 + -15 = -15 -2x = -15 Divide each side by '-2'. x = 7.5 Simplifying x = 7.5

Subproblem 2

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Solution

x = {7.5, -8}

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