5x-10=-x^2+2x+18

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Solution for 5x-10=-x^2+2x+18 equation:


Simplifying
5x + -10 = -1x2 + 2x + 18

Reorder the terms:
-10 + 5x = -1x2 + 2x + 18

Reorder the terms:
-10 + 5x = 18 + 2x + -1x2

Solving
-10 + 5x = 18 + 2x + -1x2

Solving for variable 'x'.

Reorder the terms:
-10 + -18 + 5x + -2x + x2 = 18 + 2x + -1x2 + -18 + -2x + x2

Combine like terms: -10 + -18 = -28
-28 + 5x + -2x + x2 = 18 + 2x + -1x2 + -18 + -2x + x2

Combine like terms: 5x + -2x = 3x
-28 + 3x + x2 = 18 + 2x + -1x2 + -18 + -2x + x2

Reorder the terms:
-28 + 3x + x2 = 18 + -18 + 2x + -2x + -1x2 + x2

Combine like terms: 18 + -18 = 0
-28 + 3x + x2 = 0 + 2x + -2x + -1x2 + x2
-28 + 3x + x2 = 2x + -2x + -1x2 + x2

Combine like terms: 2x + -2x = 0
-28 + 3x + x2 = 0 + -1x2 + x2
-28 + 3x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-28 + 3x + x2 = 0

Factor a trinomial.
(-7 + -1x)(4 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-7, 4}

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