If the sum of the roots of the quadratic equation $5x^2+bx+4=0 is 9, the find the value of b.
A0
B20
C-45
D-25
If the sum of the roots of the quadratic equation $5x^2+bx+4=0 is 9, the find the value of b.
A0
B20
C-45
D-25
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