(u-5)(u+2)=0

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Solution for (u-5)(u+2)=0 equation:


Simplifying
(u + -5)(u + 2) = 0

Reorder the terms:
(-5 + u)(u + 2) = 0

Reorder the terms:
(-5 + u)(2 + u) = 0

Multiply (-5 + u) * (2 + u)
(-5(2 + u) + u(2 + u)) = 0
((2 * -5 + u * -5) + u(2 + u)) = 0
((-10 + -5u) + u(2 + u)) = 0
(-10 + -5u + (2 * u + u * u)) = 0
(-10 + -5u + (2u + u2)) = 0

Combine like terms: -5u + 2u = -3u
(-10 + -3u + u2) = 0

Solving
-10 + -3u + u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-2 + -1u)(5 + -1u) = 0

Subproblem 1

Set the factor '(-2 + -1u)' equal to zero and attempt to solve: Simplifying -2 + -1u = 0 Solving -2 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1u = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1u = 0 + 2 -1u = 0 + 2 Combine like terms: 0 + 2 = 2 -1u = 2 Divide each side by '-1'. u = -2 Simplifying u = -2

Subproblem 2

Set the factor '(5 + -1u)' equal to zero and attempt to solve: Simplifying 5 + -1u = 0 Solving 5 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1u = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1u = 0 + -5 -1u = 0 + -5 Combine like terms: 0 + -5 = -5 -1u = -5 Divide each side by '-1'. u = 5 Simplifying u = 5

Solution

u = {-2, 5}

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