480=x(x+4)

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Solution for 480=x(x+4) equation:


Simplifying
480 = x(x + 4)

Reorder the terms:
480 = x(4 + x)
480 = (4 * x + x * x)
480 = (4x + x2)

Solving
480 = 4x + x2

Solving for variable 'x'.

Reorder the terms:
480 + -4x + -1x2 = 4x + -4x + x2 + -1x2

Combine like terms: 4x + -4x = 0
480 + -4x + -1x2 = 0 + x2 + -1x2
480 + -4x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
480 + -4x + -1x2 = 0

Factor a trinomial.
(20 + -1x)(24 + x) = 0

Subproblem 1

Set the factor '(20 + -1x)' equal to zero and attempt to solve: Simplifying 20 + -1x = 0 Solving 20 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1x = 0 + -20 -1x = 0 + -20 Combine like terms: 0 + -20 = -20 -1x = -20 Divide each side by '-1'. x = 20 Simplifying x = 20

Subproblem 2

Set the factor '(24 + x)' equal to zero and attempt to solve: Simplifying 24 + x = 0 Solving 24 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-24' to each side of the equation. 24 + -24 + x = 0 + -24 Combine like terms: 24 + -24 = 0 0 + x = 0 + -24 x = 0 + -24 Combine like terms: 0 + -24 = -24 x = -24 Simplifying x = -24

Solution

x = {20, -24}

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