(3x^2-6x+28)+(8x^2+8x-76)=

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Solution for (3x^2-6x+28)+(8x^2+8x-76)= equation:


Simplifying
(3x2 + -6x + 28) + (8x2 + 8x + -76) = 0

Reorder the terms:
(28 + -6x + 3x2) + (8x2 + 8x + -76) = 0

Remove parenthesis around (28 + -6x + 3x2)
28 + -6x + 3x2 + (8x2 + 8x + -76) = 0

Reorder the terms:
28 + -6x + 3x2 + (-76 + 8x + 8x2) = 0

Remove parenthesis around (-76 + 8x + 8x2)
28 + -6x + 3x2 + -76 + 8x + 8x2 = 0

Reorder the terms:
28 + -76 + -6x + 8x + 3x2 + 8x2 = 0

Combine like terms: 28 + -76 = -48
-48 + -6x + 8x + 3x2 + 8x2 = 0

Combine like terms: -6x + 8x = 2x
-48 + 2x + 3x2 + 8x2 = 0

Combine like terms: 3x2 + 8x2 = 11x2
-48 + 2x + 11x2 = 0

Solving
-48 + 2x + 11x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-24 + -11x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-24 + -11x)' equal to zero and attempt to solve: Simplifying -24 + -11x = 0 Solving -24 + -11x = 0 Move all terms containing x to the left, all other terms to the right. Add '24' to each side of the equation. -24 + 24 + -11x = 0 + 24 Combine like terms: -24 + 24 = 0 0 + -11x = 0 + 24 -11x = 0 + 24 Combine like terms: 0 + 24 = 24 -11x = 24 Divide each side by '-11'. x = -2.181818182 Simplifying x = -2.181818182

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-2.181818182, 2}

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