(a+8)(a-7)=0

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Solution for (a+8)(a-7)=0 equation:


Simplifying
(a + 8)(a + -7) = 0

Reorder the terms:
(8 + a)(a + -7) = 0

Reorder the terms:
(8 + a)(-7 + a) = 0

Multiply (8 + a) * (-7 + a)
(8(-7 + a) + a(-7 + a)) = 0
((-7 * 8 + a * 8) + a(-7 + a)) = 0
((-56 + 8a) + a(-7 + a)) = 0
(-56 + 8a + (-7 * a + a * a)) = 0
(-56 + 8a + (-7a + a2)) = 0

Combine like terms: 8a + -7a = 1a
(-56 + 1a + a2) = 0

Solving
-56 + 1a + a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(-8 + -1a)(7 + -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 '(7 + -1a)' equal to zero and attempt to solve: Simplifying 7 + -1a = 0 Solving 7 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1a = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1a = 0 + -7 -1a = 0 + -7 Combine like terms: 0 + -7 = -7 -1a = -7 Divide each side by '-1'. a = 7 Simplifying a = 7

Solution

a = {-8, 7}

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