2x^2-90=11x

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Solution for 2x^2-90=11x equation:


Simplifying
2x2 + -90 = 11x

Reorder the terms:
-90 + 2x2 = 11x

Solving
-90 + 2x2 = 11x

Solving for variable 'x'.

Reorder the terms:
-90 + -11x + 2x2 = 11x + -11x

Combine like terms: 11x + -11x = 0
-90 + -11x + 2x2 = 0

Factor a trinomial.
(-9 + -2x)(10 + -1x) = 0

Subproblem 1

Set the factor '(-9 + -2x)' equal to zero and attempt to solve: Simplifying -9 + -2x = 0 Solving -9 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -2x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2x = 0 + 9 -2x = 0 + 9 Combine like terms: 0 + 9 = 9 -2x = 9 Divide each side by '-2'. x = -4.5 Simplifying x = -4.5

Subproblem 2

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

Solution

x = {-4.5, 10}

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