Question

Quadratic equation

Answer 1

the graph of a quadratic expression y=f(x)=ax^2-bx+c is as shown in the figure
c(9a-3b+c) is
a)positive
b)negative
c)zero
d)None of these

Answer 2

@hartnn

Answer 3

It can't be imaginary , so None of these is cancelled out

Answer 4

y= x^2 -1
a=1, b=0, c=-1

Answer 5

-1,1 are the intercepts
so,
y = (x-1) (x+1)

Answer 6

I didn't think of that , thanks

Answer 7

So, negative

Answer 8

yes :)

Answer 9

wait the graph is this , sorry