Seudónimo
Seudónimo
18-05-2017
Mathematics
contestada
help please thank you so much
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Аноним
Аноним
18-05-2017
1 is (p-7)(p+7) or B
2 shown
x^2 + 5x = 6
x^2 + 5x + 25/4 = 6 + 25/4 (take the 5 divide by 2 then square)
(x + 5/2)^2 = 49/4
x + 5/2 = 7/2 and x + 5/2 = -7/2
x = 2/2 = 1 and x = -12/2 = -6
x = 1 and -6 so B
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