Q5 of 47 Page 1

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

It is given in the question that,

ax2 + 7x + b = 0 is the quadratic equation having two roots


From the equation, we have


a = a, b = 7 and c = b


We know that,


Sum of roots =





- 7a = - 21



Also, we know that


Product of roots =




b= -6


Hence, a = 3 and b = -6


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