Question

Draw the graph of the quadratic polynomial f(x)=3- 2x-x2

Answer 1

Answer:

(i) The coefficient of x2 in f(x) = 3 - 2x - x2 is - 1 i.e. a negative real number and so the parabola opens downwards. (ii) D =b2 - 4ax = 4 + 12 = 16 > 0. So, the parabola cuts x-axis two distinct points