(6x^2-5x+12)+(9x^2+7x-68)=

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Solution for (6x^2-5x+12)+(9x^2+7x-68)= equation:


Simplifying
(6x2 + -5x + 12) + (9x2 + 7x + -68) = 0

Reorder the terms:
(12 + -5x + 6x2) + (9x2 + 7x + -68) = 0

Remove parenthesis around (12 + -5x + 6x2)
12 + -5x + 6x2 + (9x2 + 7x + -68) = 0

Reorder the terms:
12 + -5x + 6x2 + (-68 + 7x + 9x2) = 0

Remove parenthesis around (-68 + 7x + 9x2)
12 + -5x + 6x2 + -68 + 7x + 9x2 = 0

Reorder the terms:
12 + -68 + -5x + 7x + 6x2 + 9x2 = 0

Combine like terms: 12 + -68 = -56
-56 + -5x + 7x + 6x2 + 9x2 = 0

Combine like terms: -5x + 7x = 2x
-56 + 2x + 6x2 + 9x2 = 0

Combine like terms: 6x2 + 9x2 = 15x2
-56 + 2x + 15x2 = 0

Solving
-56 + 2x + 15x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-2 + -1x)(28 + -15x) = 0

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(28 + -15x)' equal to zero and attempt to solve: Simplifying 28 + -15x = 0 Solving 28 + -15x = 0 Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + -15x = 0 + -28 Combine like terms: 28 + -28 = 0 0 + -15x = 0 + -28 -15x = 0 + -28 Combine like terms: 0 + -28 = -28 -15x = -28 Divide each side by '-15'. x = 1.866666667 Simplifying x = 1.866666667

Solution

x = {-2, 1.866666667}

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