(9-u)(4+4u)=

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Solution for (9-u)(4+4u)= equation:


Simplifying
(9 + -1u)(4 + 4u) = 0

Multiply (9 + -1u) * (4 + 4u)
(9(4 + 4u) + -1u * (4 + 4u)) = 0
((4 * 9 + 4u * 9) + -1u * (4 + 4u)) = 0
((36 + 36u) + -1u * (4 + 4u)) = 0
(36 + 36u + (4 * -1u + 4u * -1u)) = 0
(36 + 36u + (-4u + -4u2)) = 0

Combine like terms: 36u + -4u = 32u
(36 + 32u + -4u2) = 0

Solving
36 + 32u + -4u2 = 0

Solving for variable 'u'.

Factor out the Greatest Common Factor (GCF), '4'.
4(9 + 8u + -1u2) = 0

Factor a trinomial.
4((9 + -1u)(1 + u)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(9 + -1u)' equal to zero and attempt to solve: Simplifying 9 + -1u = 0 Solving 9 + -1u = 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 + -1u = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1u = 0 + -9 -1u = 0 + -9 Combine like terms: 0 + -9 = -9 -1u = -9 Divide each side by '-1'. u = 9 Simplifying u = 9

Subproblem 2

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

Solution

u = {9, -1}

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