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Mathematics
Kallie Savage
27 September, 04:19
Find the roots. List the correct steps
f (n) = n^2 - 6n - 16
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Julianna Simpson
27 September, 07:27
0
n_1 = 8
n_2 = - 2
Step-by-step explanation:
D = b^2 - 4ac (where f (x) = ax^2 + bx + c)
D = - 6^2 - 4*1*-16
D = 36 + 64 = 100
n_1, n_2 = (-b + -sqrt (D)) / (2a)
n_1, n_2 = ( - (-6) + -sqrt (100)) / (2*1)
n_1, n_2 = (6 + - 10) / 2
n_1 = (6 + 10) / 2 - > 16/2 = 8
n_2 = (6 - 10) / 2 - > - 4/2 = - 2
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