x(x+4)-2=x^2-4(x+3)

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Solution for x(x+4)-2=x^2-4(x+3) equation:


Simplifying
x(x + 4) + -2 = x2 + -4(x + 3)

Reorder the terms:
x(4 + x) + -2 = x2 + -4(x + 3)
(4 * x + x * x) + -2 = x2 + -4(x + 3)
(4x + x2) + -2 = x2 + -4(x + 3)

Reorder the terms:
-2 + 4x + x2 = x2 + -4(x + 3)

Reorder the terms:
-2 + 4x + x2 = x2 + -4(3 + x)
-2 + 4x + x2 = x2 + (3 * -4 + x * -4)
-2 + 4x + x2 = x2 + (-12 + -4x)

Reorder the terms:
-2 + 4x + x2 = -12 + -4x + x2

Add '-1x2' to each side of the equation.
-2 + 4x + x2 + -1x2 = -12 + -4x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-2 + 4x + 0 = -12 + -4x + x2 + -1x2
-2 + 4x = -12 + -4x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-2 + 4x = -12 + -4x + 0
-2 + 4x = -12 + -4x

Solving
-2 + 4x = -12 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-2 + 4x + 4x = -12 + -4x + 4x

Combine like terms: 4x + 4x = 8x
-2 + 8x = -12 + -4x + 4x

Combine like terms: -4x + 4x = 0
-2 + 8x = -12 + 0
-2 + 8x = -12

Add '2' to each side of the equation.
-2 + 2 + 8x = -12 + 2

Combine like terms: -2 + 2 = 0
0 + 8x = -12 + 2
8x = -12 + 2

Combine like terms: -12 + 2 = -10
8x = -10

Divide each side by '8'.
x = -1.25

Simplifying
x = -1.25

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