Question

class 10 if alpha and beta are the zeroes of of the polynomial 2x ^2 - 6x+7 the the value of alpha square+beta square is​

Answer 1

Answer:

Step-by-step explanation:

Of α & β are two zeros of f(x)=ax²+bx+c then ,

α + β = -b/a

αβ=c/a

So for your problem

a=2 b=6 c=-6

So α + β = -6/2 = -3

αβ= -6/2 = -3

Hence α + β= αβ & therefore α + β - αβ = 0.