(5x^2)+15x-40=10

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Solution for (5x^2)+15x-40=10 equation:


Simplifying
(5x2) + 15x + -40 = 10

Reorder the terms:
-40 + 15x + (5x2) = 10

Solving
-40 + 15x + (5x2) = 10

Solving for variable 'x'.

Reorder the terms:
-40 + -10 + 15x + (5x2) = 10 + -10

Combine like terms: -40 + -10 = -50
-50 + 15x + (5x2) = 10 + -10

Combine like terms: 10 + -10 = 0
-50 + 15x + (5x2) = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-10 + 3x + x2) = 0

Factor a trinomial.
5((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 5.

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 '(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

Solution

x = {-5, 2}

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