Asked by Delle

If the discriminant of 5u2 + bu + 2 = 0 is 41, fi nd all values of b.
Answered by Reiny
for 5u^2 + bu + 2 = 0
a = 5 , b = b and c = 2

b^2 - 4(5)(2) = 41
b^2 = 81
b = ± √81 = ±9
Answered by Angela
Maths
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