If and x = ‒3 are the roots of the quadratic equation ax² + 7x + b = 0 then find the values of a and b.

Question

If and x = ‒3 are the roots of the quadratic equation ax 2 + 7x + b = 0 then find the values of a and b.

Philoid · Accepted Answer

We have, ax² + 7x + b = 0

Now, Sum of zeros

∴a = 3 (i)

Product of zeroes (From i)

∴b= -6

If and x = ‒3 are the roots of the quadratic equation ax2 + 7x + b = 0 then find the values of a and b.