-4x^2+19x=-5x^2-90

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Solution for -4x^2+19x=-5x^2-90 equation:


Simplifying
-4x2 + 19x = -5x2 + -90

Reorder the terms:
19x + -4x2 = -5x2 + -90

Reorder the terms:
19x + -4x2 = -90 + -5x2

Solving
19x + -4x2 = -90 + -5x2

Solving for variable 'x'.

Reorder the terms:
90 + 19x + -4x2 + 5x2 = -90 + -5x2 + 90 + 5x2

Combine like terms: -4x2 + 5x2 = 1x2
90 + 19x + 1x2 = -90 + -5x2 + 90 + 5x2

Reorder the terms:
90 + 19x + 1x2 = -90 + 90 + -5x2 + 5x2

Combine like terms: -90 + 90 = 0
90 + 19x + 1x2 = 0 + -5x2 + 5x2
90 + 19x + 1x2 = -5x2 + 5x2

Combine like terms: -5x2 + 5x2 = 0
90 + 19x + 1x2 = 0

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

Subproblem 1

Set the factor '(10 + x)' equal to zero and attempt to solve: Simplifying 10 + x = 0 Solving 10 + x = 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 + x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + x = 0 + -10 x = 0 + -10 Combine like terms: 0 + -10 = -10 x = -10 Simplifying x = -10

Subproblem 2

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 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 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Solution

x = {-10, -9}

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