5x^2+78x+240=3x^2+50x+144

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Solution for 5x^2+78x+240=3x^2+50x+144 equation:


Simplifying
5x2 + 78x + 240 = 3x2 + 50x + 144

Reorder the terms:
240 + 78x + 5x2 = 3x2 + 50x + 144

Reorder the terms:
240 + 78x + 5x2 = 144 + 50x + 3x2

Solving
240 + 78x + 5x2 = 144 + 50x + 3x2

Solving for variable 'x'.

Reorder the terms:
240 + -144 + 78x + -50x + 5x2 + -3x2 = 144 + 50x + 3x2 + -144 + -50x + -3x2

Combine like terms: 240 + -144 = 96
96 + 78x + -50x + 5x2 + -3x2 = 144 + 50x + 3x2 + -144 + -50x + -3x2

Combine like terms: 78x + -50x = 28x
96 + 28x + 5x2 + -3x2 = 144 + 50x + 3x2 + -144 + -50x + -3x2

Combine like terms: 5x2 + -3x2 = 2x2
96 + 28x + 2x2 = 144 + 50x + 3x2 + -144 + -50x + -3x2

Reorder the terms:
96 + 28x + 2x2 = 144 + -144 + 50x + -50x + 3x2 + -3x2

Combine like terms: 144 + -144 = 0
96 + 28x + 2x2 = 0 + 50x + -50x + 3x2 + -3x2
96 + 28x + 2x2 = 50x + -50x + 3x2 + -3x2

Combine like terms: 50x + -50x = 0
96 + 28x + 2x2 = 0 + 3x2 + -3x2
96 + 28x + 2x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
96 + 28x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(48 + 14x + x2) = 0

Factor a trinomial.
2((8 + x)(6 + x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 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 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Subproblem 2

Set the factor '(6 + x)' equal to zero and attempt to solve: Simplifying 6 + x = 0 Solving 6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x = 0 + -6 x = 0 + -6 Combine like terms: 0 + -6 = -6 x = -6 Simplifying x = -6

Solution

x = {-8, -6}

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