(x+5-1)(x-4)(2)=266

Solution for (x+5-1)(x-4)(2)=266 equation:

Simplifying
(x + 5 + -1)(x + -4)(2) = 266

Reorder the terms:
(5 + -1 + x)(x + -4)(2) = 266

Combine like terms: 5 + -1 = 4
(4 + x)(x + -4)(2) = 266

Reorder the terms:
(4 + x)(-4 + x)(2) = 266

Reorder the terms for easier multiplication:
2(4 + x)(-4 + x) = 266

Multiply (4 + x) * (-4 + x)
2(4(-4 + x) + x(-4 + x)) = 266
2((-4 * 4 + x * 4) + x(-4 + x)) = 266
2((-16 + 4x) + x(-4 + x)) = 266
2(-16 + 4x + (-4 * x + x * x)) = 266
2(-16 + 4x + (-4x + x2)) = 266

Combine like terms: 4x + -4x = 0
2(-16 + 0 + x2) = 266
2(-16 + x2) = 266
(-16 * 2 + x2 * 2) = 266
(-32 + 2x2) = 266

Solving
-32 + 2x2 = 266

Solving for variable 'x'.

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

Add '32' to each side of the equation.
-32 + 32 + 2x2 = 266 + 32

Combine like terms: -32 + 32 = 0
0 + 2x2 = 266 + 32
2x2 = 266 + 32

Combine like terms: 266 + 32 = 298
2x2 = 298

Divide each side by '2'.
x2 = 149

Simplifying
x2 = 149

Take the square root of each side:
x = {-12.206555616, 12.206555616}