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OpenStudy (anonymous):
Describe the type and number of solutions for the following equation: -X^2 + 9X +7 = 0 How do describe the type?
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OpenStudy (anonymous):
two solutions
OpenStudy (anonymous):
b^2-4ac>0 81-4(-1)(7)>0 2real roots
OpenStudy (anonymous):
b^2-4ac=0 1 real root b^2-4ac<0 2 complex solutions
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