
Robert J. answered 11/26/12
Tutor
4.6
(13)
Certified High School AP Calculus and Physics Teacher
4x2-9x-4 = 0
a = 4, b = -9, c = -4
b2 - 4ac = (-9)2 - 4(4)(-4) = 145 <==Answer

Breen C.
asked 11/26/12What is the value of the discriminant for this equation?
Robert J. answered 11/26/12
Certified High School AP Calculus and Physics Teacher
4x2-9x-4 = 0
a = 4, b = -9, c = -4
b2 - 4ac = (-9)2 - 4(4)(-4) = 145 <==Answer
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Sarah B.
is the problem supposed to read (2x)^2 or (2x)*2? because that changes the answer completely.
11/27/12