10x^2-28x-39=2x+1

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Solution for 10x^2-28x-39=2x+1 equation: 


Simplifying
10x2 + -28x + -39 = 2x + 1

Reorder the terms:
-39 + -28x + 10x2 = 2x + 1

Reorder the terms:
-39 + -28x + 10x2 = 1 + 2x

Solving
-39 + -28x + 10x2 = 1 + 2x

Solving for variable 'x'.

Reorder the terms:
-39 + -1 + -28x + -2x + 10x2 = 1 + 2x + -1 + -2x

Combine like terms: -39 + -1 = -40
-40 + -28x + -2x + 10x2 = 1 + 2x + -1 + -2x

Combine like terms: -28x + -2x = -30x
-40 + -30x + 10x2 = 1 + 2x + -1 + -2x

Reorder the terms:
-40 + -30x + 10x2 = 1 + -1 + 2x + -2x

Combine like terms: 1 + -1 = 0
-40 + -30x + 10x2 = 0 + 2x + -2x
-40 + -30x + 10x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-40 + -30x + 10x2 = 0

Factor out the Greatest Common Factor (GCF), '10'.
10(-4 + -3x + x2) = 0

Factor a trinomial.
10((-1 + -1x)(4 + -1x)) = 0

Ignore the factor 10.

Subproblem 1
Set the factor '(-1 + -1x)' equal to zero and attempt to solve:

Simplifying
-1 + -1x = 0

Solving
-1 + -1x = 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 + -1x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1x = 0 + 1
-1x = 0 + 1

Combine like terms: 0 + 1 = 1
-1x = 1

Divide each side by '-1'.
x = -1

Simplifying
x = -1

Subproblem 2
Set the factor '(4 + -1x)' equal to zero and attempt to solve:

Simplifying
4 + -1x = 0

Solving
4 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + -1x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1x = 0 + -4
-1x = 0 + -4

Combine like terms: 0 + -4 = -4
-1x = -4

Divide each side by '-1'.
x = 4

Simplifying
x = 4
Solution
x = {-1, 4}

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