2x^2+9x=-7x-14

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Solution for 2x^2+9x=-7x-14 equation:


Simplifying
2x2 + 9x = -7x + -14

Reorder the terms:
9x + 2x2 = -7x + -14

Reorder the terms:
9x + 2x2 = -14 + -7x

Solving
9x + 2x2 = -14 + -7x

Solving for variable 'x'.

Reorder the terms:
14 + 9x + 7x + 2x2 = -14 + -7x + 14 + 7x

Combine like terms: 9x + 7x = 16x
14 + 16x + 2x2 = -14 + -7x + 14 + 7x

Reorder the terms:
14 + 16x + 2x2 = -14 + 14 + -7x + 7x

Combine like terms: -14 + 14 = 0
14 + 16x + 2x2 = 0 + -7x + 7x
14 + 16x + 2x2 = -7x + 7x

Combine like terms: -7x + 7x = 0
14 + 16x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(7 + 8x + x2) = 0

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

Ignore the factor 2.

Subproblem 1

Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-7, -1}

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