(2x-1)(x+3)=2x^2+x-15

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Solution for (2x-1)(x+3)=2x^2+x-15 equation:


Simplifying
(2x + -1)(x + 3) = 2x2 + x + -15

Reorder the terms:
(-1 + 2x)(x + 3) = 2x2 + x + -15

Reorder the terms:
(-1 + 2x)(3 + x) = 2x2 + x + -15

Multiply (-1 + 2x) * (3 + x)
(-1(3 + x) + 2x * (3 + x)) = 2x2 + x + -15
((3 * -1 + x * -1) + 2x * (3 + x)) = 2x2 + x + -15
((-3 + -1x) + 2x * (3 + x)) = 2x2 + x + -15
(-3 + -1x + (3 * 2x + x * 2x)) = 2x2 + x + -15
(-3 + -1x + (6x + 2x2)) = 2x2 + x + -15

Combine like terms: -1x + 6x = 5x
(-3 + 5x + 2x2) = 2x2 + x + -15

Reorder the terms:
-3 + 5x + 2x2 = -15 + x + 2x2

Add '-2x2' to each side of the equation.
-3 + 5x + 2x2 + -2x2 = -15 + x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-3 + 5x + 0 = -15 + x + 2x2 + -2x2
-3 + 5x = -15 + x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-3 + 5x = -15 + x + 0
-3 + 5x = -15 + x

Solving
-3 + 5x = -15 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-3 + 5x + -1x = -15 + x + -1x

Combine like terms: 5x + -1x = 4x
-3 + 4x = -15 + x + -1x

Combine like terms: x + -1x = 0
-3 + 4x = -15 + 0
-3 + 4x = -15

Add '3' to each side of the equation.
-3 + 3 + 4x = -15 + 3

Combine like terms: -3 + 3 = 0
0 + 4x = -15 + 3
4x = -15 + 3

Combine like terms: -15 + 3 = -12
4x = -12

Divide each side by '4'.
x = -3

Simplifying
x = -3

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