(2-u)(4u+7)=0

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Solution for (2-u)(4u+7)=0 equation:


Simplifying
(2 + -1u)(4u + 7) = 0

Reorder the terms:
(2 + -1u)(7 + 4u) = 0

Multiply (2 + -1u) * (7 + 4u)
(2(7 + 4u) + -1u * (7 + 4u)) = 0
((7 * 2 + 4u * 2) + -1u * (7 + 4u)) = 0
((14 + 8u) + -1u * (7 + 4u)) = 0
(14 + 8u + (7 * -1u + 4u * -1u)) = 0
(14 + 8u + (-7u + -4u2)) = 0

Combine like terms: 8u + -7u = 1u
(14 + 1u + -4u2) = 0

Solving
14 + 1u + -4u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(2 + -1u)(7 + 4u) = 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 '(7 + 4u)' equal to zero and attempt to solve: Simplifying 7 + 4u = 0 Solving 7 + 4u = 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 + 4u = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4u = 0 + -7 4u = 0 + -7 Combine like terms: 0 + -7 = -7 4u = -7 Divide each side by '4'. u = -1.75 Simplifying u = -1.75

Solution

u = {2, -1.75}

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