(3x-8)(x+7)=3x^2+13x-56

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Solution for (3x-8)(x+7)=3x^2+13x-56 equation:


Simplifying
(3x + -8)(x + 7) = 3x2 + 13x + -56

Reorder the terms:
(-8 + 3x)(x + 7) = 3x2 + 13x + -56

Reorder the terms:
(-8 + 3x)(7 + x) = 3x2 + 13x + -56

Multiply (-8 + 3x) * (7 + x)
(-8(7 + x) + 3x * (7 + x)) = 3x2 + 13x + -56
((7 * -8 + x * -8) + 3x * (7 + x)) = 3x2 + 13x + -56
((-56 + -8x) + 3x * (7 + x)) = 3x2 + 13x + -56
(-56 + -8x + (7 * 3x + x * 3x)) = 3x2 + 13x + -56
(-56 + -8x + (21x + 3x2)) = 3x2 + 13x + -56

Combine like terms: -8x + 21x = 13x
(-56 + 13x + 3x2) = 3x2 + 13x + -56

Reorder the terms:
-56 + 13x + 3x2 = -56 + 13x + 3x2

Add '56' to each side of the equation.
-56 + 13x + 56 + 3x2 = -56 + 13x + 56 + 3x2

Reorder the terms:
-56 + 56 + 13x + 3x2 = -56 + 13x + 56 + 3x2

Combine like terms: -56 + 56 = 0
0 + 13x + 3x2 = -56 + 13x + 56 + 3x2
13x + 3x2 = -56 + 13x + 56 + 3x2

Reorder the terms:
13x + 3x2 = -56 + 56 + 13x + 3x2

Combine like terms: -56 + 56 = 0
13x + 3x2 = 0 + 13x + 3x2
13x + 3x2 = 13x + 3x2

Add '-13x' to each side of the equation.
13x + -13x + 3x2 = 13x + -13x + 3x2

Combine like terms: 13x + -13x = 0
0 + 3x2 = 13x + -13x + 3x2
3x2 = 13x + -13x + 3x2

Combine like terms: 13x + -13x = 0
3x2 = 0 + 3x2
3x2 = 3x2

Add '-3x2' to each side of the equation.
3x2 + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
0 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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