(5+X)(X+4)=

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Solution for (5+X)(X+4)= equation:


Simplifying
(5 + X)(X + 4) = 0

Reorder the terms:
(5 + X)(4 + X) = 0

Multiply (5 + X) * (4 + X)
(5(4 + X) + X(4 + X)) = 0
((4 * 5 + X * 5) + X(4 + X)) = 0
((20 + 5X) + X(4 + X)) = 0
(20 + 5X + (4 * X + X * X)) = 0
(20 + 5X + (4X + X2)) = 0

Combine like terms: 5X + 4X = 9X
(20 + 9X + X2) = 0

Solving
20 + 9X + X2 = 0

Solving for variable 'X'.

Factor a trinomial.
(5 + X)(4 + X) = 0

Subproblem 1

Set the factor '(5 + X)' equal to zero and attempt to solve: Simplifying 5 + X = 0 Solving 5 + X = 0 Move all terms containing X to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + X = 0 + -5 Combine like terms: 5 + -5 = 0 0 + X = 0 + -5 X = 0 + -5 Combine like terms: 0 + -5 = -5 X = -5 Simplifying X = -5

Subproblem 2

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

Solution

X = {-5, -4}

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