80=x^2-16x

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Solution for 80=x^2-16x equation:


Simplifying
80 = x2 + -16x

Reorder the terms:
80 = -16x + x2

Solving
80 = -16x + x2

Solving for variable 'x'.

Reorder the terms:
80 + 16x + -1x2 = -16x + 16x + x2 + -1x2

Combine like terms: -16x + 16x = 0
80 + 16x + -1x2 = 0 + x2 + -1x2
80 + 16x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
80 + 16x + -1x2 = 0

Factor a trinomial.
(20 + -1x)(4 + 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 '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Solution

x = {20, -4}

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