navakry65
navakry65
06-10-2020
Mathematics
contestada
(a + 1)(a + 8) = 0
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mieraanh
mieraanh
06-10-2020
(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
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