15x^2+70x=25

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Solution for 15x^2+70x=25 equation:


Simplifying
15x2 + 70x = 25

Reorder the terms:
70x + 15x2 = 25

Solving
70x + 15x2 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + 70x + 15x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + 70x + 15x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-5 + 14x + 3x2) = 0

Factor a trinomial.
5((-5 + -1x)(1 + -3x)) = 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 '(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 = {-5, 0.3333333333}

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