0=-3x^2-30x-63

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Solution for 0=-3x^2-30x-63 equation:


Simplifying
0 = -3x2 + -30x + -63

Reorder the terms:
0 = -63 + -30x + -3x2

Solving
0 = -63 + -30x + -3x2

Solving for variable 'x'.

Combine like terms: 0 + 63 = 63
63 + 30x + 3x2 = -63 + -30x + -3x2 + 63 + 30x + 3x2

Reorder the terms:
63 + 30x + 3x2 = -63 + 63 + -30x + 30x + -3x2 + 3x2

Combine like terms: -63 + 63 = 0
63 + 30x + 3x2 = 0 + -30x + 30x + -3x2 + 3x2
63 + 30x + 3x2 = -30x + 30x + -3x2 + 3x2

Combine like terms: -30x + 30x = 0
63 + 30x + 3x2 = 0 + -3x2 + 3x2
63 + 30x + 3x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
63 + 30x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(21 + 10x + x2) = 0

Factor a trinomial.
3((7 + x)(3 + x)) = 0

Ignore the factor 3.

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

Solution

x = {-7, -3}

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