315=6x^2+3x

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Solution for 315=6x^2+3x equation:


Simplifying
315 = 6x2 + 3x

Reorder the terms:
315 = 3x + 6x2

Solving
315 = 3x + 6x2

Solving for variable 'x'.

Reorder the terms:
315 + -3x + -6x2 = 3x + -3x + 6x2 + -6x2

Combine like terms: 3x + -3x = 0
315 + -3x + -6x2 = 0 + 6x2 + -6x2
315 + -3x + -6x2 = 6x2 + -6x2

Combine like terms: 6x2 + -6x2 = 0
315 + -3x + -6x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(105 + -1x + -2x2) = 0

Factor a trinomial.
3((7 + -1x)(15 + 2x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Subproblem 2

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

Solution

x = {7, -7.5}

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