4x^2-7x-8=-x^2+4x+4

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Solution for 4x^2-7x-8=-x^2+4x+4 equation: 


Simplifying
4x2 + -7x + -8 = -1x2 + 4x + 4

Reorder the terms:
-8 + -7x + 4x2 = -1x2 + 4x + 4

Reorder the terms:
-8 + -7x + 4x2 = 4 + 4x + -1x2

Solving
-8 + -7x + 4x2 = 4 + 4x + -1x2

Solving for variable 'x'.

Reorder the terms:
-8 + -4 + -7x + -4x + 4x2 + x2 = 4 + 4x + -1x2 + -4 + -4x + x2

Combine like terms: -8 + -4 = -12
-12 + -7x + -4x + 4x2 + x2 = 4 + 4x + -1x2 + -4 + -4x + x2

Combine like terms: -7x + -4x = -11x
-12 + -11x + 4x2 + x2 = 4 + 4x + -1x2 + -4 + -4x + x2

Combine like terms: 4x2 + x2 = 5x2
-12 + -11x + 5x2 = 4 + 4x + -1x2 + -4 + -4x + x2

Reorder the terms:
-12 + -11x + 5x2 = 4 + -4 + 4x + -4x + -1x2 + x2

Combine like terms: 4 + -4 = 0
-12 + -11x + 5x2 = 0 + 4x + -4x + -1x2 + x2
-12 + -11x + 5x2 = 4x + -4x + -1x2 + x2

Combine like terms: 4x + -4x = 0
-12 + -11x + 5x2 = 0 + -1x2 + x2
-12 + -11x + 5x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-12 + -11x + 5x2 = 0

Factor a trinomial.
(-4 + -5x)(3 + -1x) = 0


Subproblem 1
Set the factor '(-4 + -5x)' equal to zero and attempt to solve:

Simplifying
-4 + -5x = 0

Solving
-4 + -5x = 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 + -5x = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -5x = 0 + 4
-5x = 0 + 4

Combine like terms: 0 + 4 = 4
-5x = 4

Divide each side by '-5'.
x = -0.8

Simplifying
x = -0.8

Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -1x = 0 + -3

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

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

Divide each side by '-1'.
x = 3

Simplifying
x = 3
Solution
x = {-0.8, 3}

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