(7-u)(5u-9)=0

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Solution for (7-u)(5u-9)=0 equation:


Simplifying
(7 + -1u)(5u + -9) = 0

Reorder the terms:
(7 + -1u)(-9 + 5u) = 0

Multiply (7 + -1u) * (-9 + 5u)
(7(-9 + 5u) + -1u * (-9 + 5u)) = 0
((-9 * 7 + 5u * 7) + -1u * (-9 + 5u)) = 0
((-63 + 35u) + -1u * (-9 + 5u)) = 0
(-63 + 35u + (-9 * -1u + 5u * -1u)) = 0
(-63 + 35u + (9u + -5u2)) = 0

Combine like terms: 35u + 9u = 44u
(-63 + 44u + -5u2) = 0

Solving
-63 + 44u + -5u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-7 + u)(9 + -5u) = 0

Subproblem 1

Set the factor '(-7 + u)' equal to zero and attempt to solve: Simplifying -7 + u = 0 Solving -7 + u = 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 + u = 0 + 7 Combine like terms: -7 + 7 = 0 0 + u = 0 + 7 u = 0 + 7 Combine like terms: 0 + 7 = 7 u = 7 Simplifying u = 7

Subproblem 2

Set the factor '(9 + -5u)' equal to zero and attempt to solve: Simplifying 9 + -5u = 0 Solving 9 + -5u = 0 Move all terms containing u to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -5u = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -5u = 0 + -9 -5u = 0 + -9 Combine like terms: 0 + -9 = -9 -5u = -9 Divide each side by '-5'. u = 1.8 Simplifying u = 1.8

Solution

u = {7, 1.8}

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