Question

if a and b are the zeroes of the polynomial, f (x) = x² -7x + 12, then the value of 11/ab​

Answer 1

Answer:

0.91666

Step-by-step explanation:

x=[-q+√(q^2-4pr)]/2p or [-q-√(q^2-4pr)]/2p

p=1

q=-7

r=12

x=[7+√(7*7-(4*1*12))]/(2*1) or [7-√(7*7-(4*1*12))]/(2*1)

x=[7+1]/2 or [7-1]/2

x=8/2 or 6/2

x=4 or 3

a=4

b=3

11/ab=11/(4*3)=11/12=0.916666