3+3x(5x-18)=108

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Solution for 3+3x(5x-18)=108 equation:


Simplifying
3 + 3x(5x + -18) = 108

Reorder the terms:
3 + 3x(-18 + 5x) = 108
3 + (-18 * 3x + 5x * 3x) = 108
3 + (-54x + 15x2) = 108

Solving
3 + -54x + 15x2 = 108

Solving for variable 'x'.

Reorder the terms:
3 + -108 + -54x + 15x2 = 108 + -108

Combine like terms: 3 + -108 = -105
-105 + -54x + 15x2 = 108 + -108

Combine like terms: 108 + -108 = 0
-105 + -54x + 15x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-35 + -18x + 5x2) = 0

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

Ignore the factor 3.

Subproblem 1

Set the factor '(-7 + -5x)' equal to zero and attempt to solve: Simplifying -7 + -5x = 0 Solving -7 + -5x = 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 + -5x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -5x = 0 + 7 -5x = 0 + 7 Combine like terms: 0 + 7 = 7 -5x = 7 Divide each side by '-5'. x = -1.4 Simplifying x = -1.4

Subproblem 2

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

Solution

x = {-1.4, 5}

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