(2-u)(5u+9)=0

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Solution for (2-u)(5u+9)=0 equation:


Simplifying
(2 + -1u)(5u + 9) = 0

Reorder the terms:
(2 + -1u)(9 + 5u) = 0

Multiply (2 + -1u) * (9 + 5u)
(2(9 + 5u) + -1u * (9 + 5u)) = 0
((9 * 2 + 5u * 2) + -1u * (9 + 5u)) = 0
((18 + 10u) + -1u * (9 + 5u)) = 0
(18 + 10u + (9 * -1u + 5u * -1u)) = 0
(18 + 10u + (-9u + -5u2)) = 0

Combine like terms: 10u + -9u = 1u
(18 + 1u + -5u2) = 0

Solving
18 + 1u + -5u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(2 + -1u)(9 + 5u) = 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 '(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 = {2, -1.8}

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