(a+8)(a-5)=

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Solution for (a+8)(a-5)= equation:


Simplifying
(a + 8)(a + -5) = 0

Reorder the terms:
(8 + a)(a + -5) = 0

Reorder the terms:
(8 + a)(-5 + a) = 0

Multiply (8 + a) * (-5 + a)
(8(-5 + a) + a(-5 + a)) = 0
((-5 * 8 + a * 8) + a(-5 + a)) = 0
((-40 + 8a) + a(-5 + a)) = 0
(-40 + 8a + (-5 * a + a * a)) = 0
(-40 + 8a + (-5a + a2)) = 0

Combine like terms: 8a + -5a = 3a
(-40 + 3a + a2) = 0

Solving
-40 + 3a + a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(-8 + -1a)(5 + -1a) = 0

Subproblem 1

Set the factor '(-8 + -1a)' equal to zero and attempt to solve: Simplifying -8 + -1a = 0 Solving -8 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1a = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1a = 0 + 8 -1a = 0 + 8 Combine like terms: 0 + 8 = 8 -1a = 8 Divide each side by '-1'. a = -8 Simplifying a = -8

Subproblem 2

Set the factor '(5 + -1a)' equal to zero and attempt to solve: Simplifying 5 + -1a = 0 Solving 5 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1a = 0 + -5 -1a = 0 + -5 Combine like terms: 0 + -5 = -5 -1a = -5 Divide each side by '-1'. a = 5 Simplifying a = 5

Solution

a = {-8, 5}

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