Question

10. If x=⅔ and x = -3 are roots of the quadratic equation ax?+7x+b= 0, find the
values of a and b.​

Answer 1

Answer:

a=3   b=-6

Step-by-step explanation:

-7/a=sum of roots

-7/a=-3+2/3

-7/a=(-9+2)/3

-7/a=-7/3

a=3

b/a=product of roots

b/3=2/3*-3

b/3=-2

b=-6

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