Question

Find all the common zeroes of the polynmials : p(x) = x3 + 5x2 – 9x – 45 and g(x) = x3 + 8x2 + 15x

Answer 1

x3+8x2+15=0
x3+8x2=-15
x3+x2=-15 by 2
5x=15 by 2 
x=15by 2 x 5
x=2 by 3

now put the values as 2 by 3 in the whole equation p(x)