(4u-7)(3+u)=0

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Solution for (4u-7)(3+u)=0 equation:


Simplifying
(4u + -7)(3 + u) = 0

Reorder the terms:
(-7 + 4u)(3 + u) = 0

Multiply (-7 + 4u) * (3 + u)
(-7(3 + u) + 4u * (3 + u)) = 0
((3 * -7 + u * -7) + 4u * (3 + u)) = 0
((-21 + -7u) + 4u * (3 + u)) = 0
(-21 + -7u + (3 * 4u + u * 4u)) = 0
(-21 + -7u + (12u + 4u2)) = 0

Combine like terms: -7u + 12u = 5u
(-21 + 5u + 4u2) = 0

Solving
-21 + 5u + 4u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-3 + -1u)(7 + -4u) = 0

Subproblem 1

Set the factor '(-3 + -1u)' equal to zero and attempt to solve: Simplifying -3 + -1u = 0 Solving -3 + -1u = 0 Move all terms containing u to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1u = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1u = 0 + 3 -1u = 0 + 3 Combine like terms: 0 + 3 = 3 -1u = 3 Divide each side by '-1'. u = -3 Simplifying u = -3

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 = {-3, 1.75}

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