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OpenStudy (anonymous):
Solve for x. x2 + 4x - 21 = 0 A. -3, -7 B. -3, 7 C. 3, -7 D. 3, 7
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OpenStudy (abb0t):
the product of two numbers = -21 but whose sum = 4. Those two numbers are your answer.
OpenStudy (anonymous):
i got -7, 3 so I would go with C.
OpenStudy (anonymous):
(c) me too
OpenStudy (abb0t):
hm....
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