x(x+8)=1280

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Solution for x(x+8)=1280 equation:


Simplifying
x(x + 8) = 1280

Reorder the terms:
x(8 + x) = 1280
(8 * x + x * x) = 1280
(8x + x2) = 1280

Solving
8x + x2 = 1280

Solving for variable 'x'.

Reorder the terms:
-1280 + 8x + x2 = 1280 + -1280

Combine like terms: 1280 + -1280 = 0
-1280 + 8x + x2 = 0

Factor a trinomial.
(-40 + -1x)(32 + -1x) = 0

Subproblem 1

Set the factor '(-40 + -1x)' equal to zero and attempt to solve: Simplifying -40 + -1x = 0 Solving -40 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + -1x = 0 + 40 Combine like terms: -40 + 40 = 0 0 + -1x = 0 + 40 -1x = 0 + 40 Combine like terms: 0 + 40 = 40 -1x = 40 Divide each side by '-1'. x = -40 Simplifying x = -40

Subproblem 2

Set the factor '(32 + -1x)' equal to zero and attempt to solve: Simplifying 32 + -1x = 0 Solving 32 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-32' to each side of the equation. 32 + -32 + -1x = 0 + -32 Combine like terms: 32 + -32 = 0 0 + -1x = 0 + -32 -1x = 0 + -32 Combine like terms: 0 + -32 = -32 -1x = -32 Divide each side by '-1'. x = 32 Simplifying x = 32

Solution

x = {-40, 32}

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