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(a + 1)(a + 8) = 0 How to solve
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3 votes
(a + 1)(a + 8) = 0
How to solve

User Sander Schutten
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1 Answer

7 votes
(a + 1) (a + 8) = 0

a^2 + 8a + a + 8 = 0
a^2 + 9a + 8 = 0
a^2 + a + 8a + 8 = 0
a (a + 1) + 8 (a + 1) = 0
(a + 1) (a + 8) = 0

a + 1 = 0
a = -1

a + 8 = 0
a = -8
User Humanbeing
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