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Kenley Whitaker
Mathematics
11 June, 19:10
Solve for b:
b² = 8b + 84
+3
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1
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Karter Wade
11 June, 19:38
0
B² = 8b + 84
b² - 8b - 84 = 0
b = - (-8) + / - √ ((8) ² - 4 (1) (-84))
2 (1)
b = 8 + / - √ (64 + 336)
2
b = 8 + / - √ (400)
2
b = 8 + / - 20
2
b = 4 + 10
b = 4 + 10 b = 4 - 10
b = 14 b = - 6
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