Question

If 1,-2, and a are the roots of xcube-2xsquare-5x+6=0. The value of a is ?

Answer 1

Answer:

here is your answer

Step-by-step explanation:

f(x)=x

3

−2x

2

−5x+6=0

α,β and 1 are its roots

⇒x

2

−x−6=0

x

2

−3x+2x−6=0

x(x−3)+2(x−3)=0

(x+2)(x−3)=0

x=−2,3

⇒α=2,β=−3

Hence, the answer is 2,−3.