(3x-9)+(2x^2+2x+2)=

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Solution for (3x-9)+(2x^2+2x+2)= equation:


Simplifying
(3x + -9) + (2x2 + 2x + 2) = 0

Reorder the terms:
(-9 + 3x) + (2x2 + 2x + 2) = 0

Remove parenthesis around (-9 + 3x)
-9 + 3x + (2x2 + 2x + 2) = 0

Reorder the terms:
-9 + 3x + (2 + 2x + 2x2) = 0

Remove parenthesis around (2 + 2x + 2x2)
-9 + 3x + 2 + 2x + 2x2 = 0

Reorder the terms:
-9 + 2 + 3x + 2x + 2x2 = 0

Combine like terms: -9 + 2 = -7
-7 + 3x + 2x + 2x2 = 0

Combine like terms: 3x + 2x = 5x
-7 + 5x + 2x2 = 0

Solving
-7 + 5x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -2x)(1 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -2x)' equal to zero and attempt to solve: Simplifying -7 + -2x = 0 Solving -7 + -2x = 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 + -2x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -2x = 0 + 7 -2x = 0 + 7 Combine like terms: 0 + 7 = 7 -2x = 7 Divide each side by '-2'. x = -3.5 Simplifying x = -3.5

Subproblem 2

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

Solution

x = {-3.5, 1}

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