nylancallaghan72 nylancallaghan72

02-05-2020
Mathematics

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Complete the square for the expression x^2 + 8x

Complete the square for the expression x2 8x class=

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macygmac macygmac

02-05-2020

x2 - 8x + 16 = 16
(x-4)(x-4) = 16
(x-4)2 = 16
x - 4 = ± 4

So, either
x - 4 = +4 or x - 4 = -4
x = 8 or x = 0

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