9x^2+87x=30

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Solution for 9x^2+87x=30 equation:


Simplifying
9x2 + 87x = 30

Reorder the terms:
87x + 9x2 = 30

Solving
87x + 9x2 = 30

Solving for variable 'x'.

Reorder the terms:
-30 + 87x + 9x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + 87x + 9x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-10 + 29x + 3x2) = 0

Factor a trinomial.
3((-10 + -1x)(1 + -3x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-10 + -1x)' equal to zero and attempt to solve: Simplifying -10 + -1x = 0 Solving -10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1x = 0 + 10 -1x = 0 + 10 Combine like terms: 0 + 10 = 10 -1x = 10 Divide each side by '-1'. x = -10 Simplifying x = -10

Subproblem 2

Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333

Solution

x = {-10, 0.3333333333}

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