2x^2+12x=5x+30

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Solution for 2x^2+12x=5x+30 equation:


Simplifying
2x2 + 12x = 5x + 30

Reorder the terms:
12x + 2x2 = 5x + 30

Reorder the terms:
12x + 2x2 = 30 + 5x

Solving
12x + 2x2 = 30 + 5x

Solving for variable 'x'.

Reorder the terms:
-30 + 12x + -5x + 2x2 = 30 + 5x + -30 + -5x

Combine like terms: 12x + -5x = 7x
-30 + 7x + 2x2 = 30 + 5x + -30 + -5x

Reorder the terms:
-30 + 7x + 2x2 = 30 + -30 + 5x + -5x

Combine like terms: 30 + -30 = 0
-30 + 7x + 2x2 = 0 + 5x + -5x
-30 + 7x + 2x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-30 + 7x + 2x2 = 0

Factor a trinomial.
(-6 + -1x)(5 + -2x) = 0

Subproblem 1

Set the factor '(-6 + -1x)' equal to zero and attempt to solve: Simplifying -6 + -1x = 0 Solving -6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1x = 0 + 6 -1x = 0 + 6 Combine like terms: 0 + 6 = 6 -1x = 6 Divide each side by '-1'. x = -6 Simplifying x = -6

Subproblem 2

Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Solution

x = {-6, 2.5}

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