2x^2+8x+9=9

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Solution for 2x^2+8x+9=9 equation:


Simplifying
2x2 + 8x + 9 = 9

Reorder the terms:
9 + 8x + 2x2 = 9

Add '-9' to each side of the equation.
9 + 8x + -9 + 2x2 = 9 + -9

Reorder the terms:
9 + -9 + 8x + 2x2 = 9 + -9

Combine like terms: 9 + -9 = 0
0 + 8x + 2x2 = 9 + -9
8x + 2x2 = 9 + -9

Combine like terms: 9 + -9 = 0
8x + 2x2 = 0

Solving
8x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x'.
2x(4 + x) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 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 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Solution

x = {0, -4}

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