(8-u)(5u+7)=0

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Solution for (8-u)(5u+7)=0 equation:


Simplifying
(8 + -1u)(5u + 7) = 0

Reorder the terms:
(8 + -1u)(7 + 5u) = 0

Multiply (8 + -1u) * (7 + 5u)
(8(7 + 5u) + -1u * (7 + 5u)) = 0
((7 * 8 + 5u * 8) + -1u * (7 + 5u)) = 0
((56 + 40u) + -1u * (7 + 5u)) = 0
(56 + 40u + (7 * -1u + 5u * -1u)) = 0
(56 + 40u + (-7u + -5u2)) = 0

Combine like terms: 40u + -7u = 33u
(56 + 33u + -5u2) = 0

Solving
56 + 33u + -5u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(8 + -1u)(7 + 5u) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(7 + 5u)' equal to zero and attempt to solve: Simplifying 7 + 5u = 0 Solving 7 + 5u = 0 Move all terms containing u to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 5u = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 5u = 0 + -7 5u = 0 + -7 Combine like terms: 0 + -7 = -7 5u = -7 Divide each side by '5'. u = -1.4 Simplifying u = -1.4

Solution

u = {8, -1.4}

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