Question

If 2/3 and -3 are the zeros of the quadratic polynomial ax^2 +7x+b the
find the values of a and b.
[CBSE 2011]​

Answer 1

The number of points of intersection of quadratic polynomial x^2 + 4x + 4 with the x axis is …………..

A0

B1

C 0 (or) 1

F2

Answer 2

Answer:

a = 3 , b = -6

Step-by-step explanation:

let 7 = c

sum of roots = 2/3 + (-3)

= 2/3 - 3

= 2-9/3

= -7/3

= -(7)/3

= -c/a

hence a = 3

now, product of roots = 2/3×(-3)

= -2

= -6/3

= -b/a

hence b = -6