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Simplifying (a + -8)(a + 7) = -2a Reorder the terms: (-8 + a)(a + 7) = -2a Reorder the terms: (-8 + a)(7 + a) = -2a Multiply (-8 + a) * (7 + a) (-8(7 + a) + a(7 + a)) = -2a ((7 * -8 + a * -8) + a(7 + a)) = -2a ((-56 + -8a) + a(7 + a)) = -2a (-56 + -8a + (7 * a + a * a)) = -2a (-56 + -8a + (7a + a2)) = -2a Combine like terms: -8a + 7a = -1a (-56 + -1a + a2) = -2a Solving -56 + -1a + a2 = -2a Solving for variable 'a'. Reorder the terms: -56 + -1a + 2a + a2 = -2a + 2a Combine like terms: -1a + 2a = 1a -56 + 1a + a2 = -2a + 2a Combine like terms: -2a + 2a = 0 -56 + 1a + a2 = 0 Factor a trinomial. (-8 + -1a)(7 + -1a) = 0Subproblem 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 = -8Subproblem 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 = 7Solution
a = {-8, 7}
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