(x+10)(x-4)=4+x^2

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Solution for (x+10)(x-4)=4+x^2 equation:


Simplifying
(x + 10)(x + -4) = 4 + x2

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

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

Multiply (10 + x) * (-4 + x)
(10(-4 + x) + x(-4 + x)) = 4 + x2
((-4 * 10 + x * 10) + x(-4 + x)) = 4 + x2
((-40 + 10x) + x(-4 + x)) = 4 + x2
(-40 + 10x + (-4 * x + x * x)) = 4 + x2
(-40 + 10x + (-4x + x2)) = 4 + x2

Combine like terms: 10x + -4x = 6x
(-40 + 6x + x2) = 4 + x2

Add '-1x2' to each side of the equation.
-40 + 6x + x2 + -1x2 = 4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-40 + 6x + 0 = 4 + x2 + -1x2
-40 + 6x = 4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-40 + 6x = 4 + 0
-40 + 6x = 4

Solving
-40 + 6x = 4

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 6x = 4 + 40

Combine like terms: -40 + 40 = 0
0 + 6x = 4 + 40
6x = 4 + 40

Combine like terms: 4 + 40 = 44
6x = 44

Divide each side by '6'.
x = 7.333333333

Simplifying
x = 7.333333333

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