(u+3)(u-8)=

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Solution for (u+3)(u-8)= equation:


Simplifying
(u + 3)(u + -8) = 0

Reorder the terms:
(3 + u)(u + -8) = 0

Reorder the terms:
(3 + u)(-8 + u) = 0

Multiply (3 + u) * (-8 + u)
(3(-8 + u) + u(-8 + u)) = 0
((-8 * 3 + u * 3) + u(-8 + u)) = 0
((-24 + 3u) + u(-8 + u)) = 0
(-24 + 3u + (-8 * u + u * u)) = 0
(-24 + 3u + (-8u + u2)) = 0

Combine like terms: 3u + -8u = -5u
(-24 + -5u + u2) = 0

Solving
-24 + -5u + u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-3 + -1u)(8 + -1u) = 0

Subproblem 1

Set the factor '(-3 + -1u)' equal to zero and attempt to solve: Simplifying -3 + -1u = 0 Solving -3 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1u = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1u = 0 + 3 -1u = 0 + 3 Combine like terms: 0 + 3 = 3 -1u = 3 Divide each side by '-1'. u = -3 Simplifying u = -3

Subproblem 2

Set the factor '(8 + -1u)' equal to zero and attempt to solve: Simplifying 8 + -1u = 0 Solving 8 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1u = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1u = 0 + -8 -1u = 0 + -8 Combine like terms: 0 + -8 = -8 -1u = -8 Divide each side by '-1'. u = 8 Simplifying u = 8

Solution

u = {-3, 8}

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