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

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


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

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

Multiply (-7 + 2u) * (4 + -1u)
(-7(4 + -1u) + 2u * (4 + -1u)) = 0
((4 * -7 + -1u * -7) + 2u * (4 + -1u)) = 0
((-28 + 7u) + 2u * (4 + -1u)) = 0
(-28 + 7u + (4 * 2u + -1u * 2u)) = 0
(-28 + 7u + (8u + -2u2)) = 0

Combine like terms: 7u + 8u = 15u
(-28 + 15u + -2u2) = 0

Solving
-28 + 15u + -2u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-4 + u)(7 + -2u) = 0

Subproblem 1

Set the factor '(-4 + u)' equal to zero and attempt to solve: Simplifying -4 + u = 0 Solving -4 + u = 0 Move all terms containing u to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + u = 0 + 4 Combine like terms: -4 + 4 = 0 0 + u = 0 + 4 u = 0 + 4 Combine like terms: 0 + 4 = 4 u = 4 Simplifying u = 4

Subproblem 2

Set the factor '(7 + -2u)' equal to zero and attempt to solve: Simplifying 7 + -2u = 0 Solving 7 + -2u = 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 + -2u = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2u = 0 + -7 -2u = 0 + -7 Combine like terms: 0 + -7 = -7 -2u = -7 Divide each side by '-2'. u = 3.5 Simplifying u = 3.5

Solution

u = {4, 3.5}

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