Question

If Alfa and beta are the zeroes of the quadratic polynomial x²-6x+a; find the value of a if 3 Alfa + 2 beta = 20

Answer 1

Answer:

a=-16

Step-by-step explanation:

Let the zeroes be m and n

Then 3m+2n=20(given)....(i)

Also in a quadratic polynomial

Sum of zeroes= -b/a

=m+n=-(-6)

m+n=6.... (ii)

Solving i and ii

m=8

n=-2

Also product of zeroes=c/a

Thus 8*-2=-16=a

Answer 2

Answer:

Hope this helps you mate