10x^2+30x=-2x^2-30x-75

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Solution for 10x^2+30x=-2x^2-30x-75 equation:


Simplifying
10x2 + 30x = -2x2 + -30x + -75

Reorder the terms:
30x + 10x2 = -2x2 + -30x + -75

Reorder the terms:
30x + 10x2 = -75 + -30x + -2x2

Solving
30x + 10x2 = -75 + -30x + -2x2

Solving for variable 'x'.

Reorder the terms:
75 + 30x + 30x + 10x2 + 2x2 = -75 + -30x + -2x2 + 75 + 30x + 2x2

Combine like terms: 30x + 30x = 60x
75 + 60x + 10x2 + 2x2 = -75 + -30x + -2x2 + 75 + 30x + 2x2

Combine like terms: 10x2 + 2x2 = 12x2
75 + 60x + 12x2 = -75 + -30x + -2x2 + 75 + 30x + 2x2

Reorder the terms:
75 + 60x + 12x2 = -75 + 75 + -30x + 30x + -2x2 + 2x2

Combine like terms: -75 + 75 = 0
75 + 60x + 12x2 = 0 + -30x + 30x + -2x2 + 2x2
75 + 60x + 12x2 = -30x + 30x + -2x2 + 2x2

Combine like terms: -30x + 30x = 0
75 + 60x + 12x2 = 0 + -2x2 + 2x2
75 + 60x + 12x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
75 + 60x + 12x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(25 + 20x + 4x2) = 0

Factor a trinomial.
3((5 + 2x)(5 + 2x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5

Subproblem 2

Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5

Solution

x = {-2.5, -2.5}

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