Question

obtain all zeroes of f(x) = x3 + 13x2 + 32x + 20 if one of it's zeroes is -2
it's URGENT PLEASE SOLVE IT QUICKLY

Answer 1

if one of its zeroes is -2 then one factor is x+2. divide th is with the f(x). apply the quadratic formula in the quotient and get the solution of x then reverse the sign and get the zero.
quadratic formula is
(-b+or-√b&2 b 4a.c.)/ 4a