x^2-d=(x+c)(x-4)

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


Simplifying
x2 + -1d = (x + c)(x + -4)

Reorder the terms:
-1d + x2 = (x + c)(x + -4)

Reorder the terms:
-1d + x2 = (c + x)(x + -4)

Reorder the terms:
-1d + x2 = (c + x)(-4 + x)

Multiply (c + x) * (-4 + x)
-1d + x2 = (c(-4 + x) + x(-4 + x))
-1d + x2 = ((-4 * c + x * c) + x(-4 + x))
-1d + x2 = ((-4c + cx) + x(-4 + x))
-1d + x2 = (-4c + cx + (-4 * x + x * x))
-1d + x2 = (-4c + cx + (-4x + x2))
-1d + x2 = (-4c + cx + -4x + x2)

Add '-1x2' to each side of the equation.
-1d + x2 + -1x2 = -4c + cx + -4x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-1d + 0 = -4c + cx + -4x + x2 + -1x2
-1d = -4c + cx + -4x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-1d = -4c + cx + -4x + 0
-1d = -4c + cx + -4x

Solving
-1d = -4c + cx + -4x

Solving for variable 'd'.

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

Divide each side by '-1'.
d = 4c + -1cx + 4x

Simplifying
d = 4c + -1cx + 4x

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