3x^2=6x+105

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Solution for 3x^2=6x+105 equation:


Simplifying
3x2 = 6x + 105

Reorder the terms:
3x2 = 105 + 6x

Solving
3x2 = 105 + 6x

Solving for variable 'x'.

Reorder the terms:
-105 + -6x + 3x2 = 105 + 6x + -105 + -6x

Reorder the terms:
-105 + -6x + 3x2 = 105 + -105 + 6x + -6x

Combine like terms: 105 + -105 = 0
-105 + -6x + 3x2 = 0 + 6x + -6x
-105 + -6x + 3x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
-105 + -6x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-35 + -2x + x2) = 0

Factor a trinomial.
3((-5 + -1x)(7 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 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 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5

Subproblem 2

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

Solution

x = {-5, 7}

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