2x^2=13x+15

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Solution for 2x^2=13x+15 equation:


Simplifying
2x2 = 13x + 15

Reorder the terms:
2x2 = 15 + 13x

Solving
2x2 = 15 + 13x

Solving for variable 'x'.

Reorder the terms:
-15 + -13x + 2x2 = 15 + 13x + -15 + -13x

Reorder the terms:
-15 + -13x + 2x2 = 15 + -15 + 13x + -13x

Combine like terms: 15 + -15 = 0
-15 + -13x + 2x2 = 0 + 13x + -13x
-15 + -13x + 2x2 = 13x + -13x

Combine like terms: 13x + -13x = 0
-15 + -13x + 2x2 = 0

Factor a trinomial.
(-1 + -1x)(15 + -2x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(15 + -2x)' equal to zero and attempt to solve: Simplifying 15 + -2x = 0 Solving 15 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -2x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -2x = 0 + -15 -2x = 0 + -15 Combine like terms: 0 + -15 = -15 -2x = -15 Divide each side by '-2'. x = 7.5 Simplifying x = 7.5

Solution

x = {-1, 7.5}

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