Find the zeros of the quadratic polynomial f(x)=x2-3x-18 and verify the relationship between the zeros and the coefficients of the polynomial.
Answers
Answered by
7
f(x)=x2-3x-18
=x2-6x+3x-18
=x(x-6)+3(x-6)
common,....
x-6=0. x+3=0
zeroes are x=6. and. x=-3
a=1 b=-3 c=-18
sum (alpha + beta )=-b/a=3/1
product(alpha ×beta)=c/a=-18/1
Similar questions