Karleyr22
Karleyr22
20-01-2015
Mathematics
contestada
Complete the square: a^2 - 2a - 8=0
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19211cookies
19211cookies
20-01-2015
a² - 2a - 8 = 0
(a - 4) (a + 2) = 0
a - 4 = 0 or a + 2 = 0
a = 4 or a = -2
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