2(x^2-19)=(2x+7)(x-4)

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Solution for 2(x^2-19)=(2x+7)(x-4) equation:


Simplifying
2(x2 + -19) = (2x + 7)(x + -4)

Reorder the terms:
2(-19 + x2) = (2x + 7)(x + -4)
(-19 * 2 + x2 * 2) = (2x + 7)(x + -4)
(-38 + 2x2) = (2x + 7)(x + -4)

Reorder the terms:
-38 + 2x2 = (7 + 2x)(x + -4)

Reorder the terms:
-38 + 2x2 = (7 + 2x)(-4 + x)

Multiply (7 + 2x) * (-4 + x)
-38 + 2x2 = (7(-4 + x) + 2x * (-4 + x))
-38 + 2x2 = ((-4 * 7 + x * 7) + 2x * (-4 + x))
-38 + 2x2 = ((-28 + 7x) + 2x * (-4 + x))
-38 + 2x2 = (-28 + 7x + (-4 * 2x + x * 2x))
-38 + 2x2 = (-28 + 7x + (-8x + 2x2))

Combine like terms: 7x + -8x = -1x
-38 + 2x2 = (-28 + -1x + 2x2)

Add '-2x2' to each side of the equation.
-38 + 2x2 + -2x2 = -28 + -1x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-38 + 0 = -28 + -1x + 2x2 + -2x2
-38 = -28 + -1x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-38 = -28 + -1x + 0
-38 = -28 + -1x

Solving
-38 = -28 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-38 + x = -28 + -1x + x

Combine like terms: -1x + x = 0
-38 + x = -28 + 0
-38 + x = -28

Add '38' to each side of the equation.
-38 + 38 + x = -28 + 38

Combine like terms: -38 + 38 = 0
0 + x = -28 + 38
x = -28 + 38

Combine like terms: -28 + 38 = 10
x = 10

Simplifying
x = 10

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