9x^2+42x=-48

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Solution for 9x^2+42x=-48 equation:


Simplifying
9x2 + 42x = -48

Reorder the terms:
42x + 9x2 = -48

Solving
42x + 9x2 = -48

Solving for variable 'x'.

Reorder the terms:
48 + 42x + 9x2 = -48 + 48

Combine like terms: -48 + 48 = 0
48 + 42x + 9x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(16 + 14x + 3x2) = 0

Factor a trinomial.
3((8 + 3x)(2 + x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(8 + 3x)' equal to zero and attempt to solve: Simplifying 8 + 3x = 0 Solving 8 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 3x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 3x = 0 + -8 3x = 0 + -8 Combine like terms: 0 + -8 = -8 3x = -8 Divide each side by '3'. x = -2.666666667 Simplifying x = -2.666666667

Subproblem 2

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {-2.666666667, -2}

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