Question

If alpha , beta are the zeroes of the polynomial x ^ 2 + 2x - 15 , then (alpha + 1)(beta + 1) equals,​

Answer 1

Answer:

x^2+2x-15

x^2+5x-3x-15

x(x+5)-3(x+5)

(x-3)(x+5)

alpha =3

beta -5