Question

if x = 2 upon 3 and x = -3 are the roots of equation ax^2+ 7 x + b = 0, find the values of a and b

Answer 1

Answer:

a= 3

b= -6

Step-by-step explanation:

x= 2/3  ;   x=-3

3x=2    ;   x+3=0

3x-2=0

(3x-2) (x+3) = 0

Now expand:

3x^2+9x-2x-6 = 0

3x^2+7x-6 = 0

a= 3

b= -6