Question

If the sum of zeroes of the polynomial p (x)=(a+1)x square+(2a+3)x+(3a+4) is -1 then find the product of its zeroes

Answer 1

p(x)=(a+1)x square+(2a+3)x+(3a+4)
p(-1)=(a+1)×(-1) square+(2a+3)×(-1)+(3a+4)
=(a+1)×1+(5a)×(-1)+(7a)
=a-5a+7a
=a-5+7
=a-2
=a = 2