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OpenStudy (anonymous):
What is the value of b2 - 4ac for the following equation? x(x + 8) = 9 28 64 100
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OpenStudy (anonymous):
first, multiply out and then move everything to one side. identify a, b and c and then go from there.
OpenStudy (gorv):
x(x+8)=9 x^2+8x-9=0
OpenStudy (gorv):
compare with standard eqn ax^2+bx+c=0
OpenStudy (anonymous):
@venkat409 please read the code of conduct and don't just give out answers!
OpenStudy (gorv):
a=1 b=8 c=-9
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OpenStudy (gorv):
so now put these values in your eqn and tell what u got
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