Question

examine whether x+2is a factor of x³+3x²+5x+6

Answer 1

x+2=0
x=-2
put in equation
(-2)^3+3(-2)^2+5(-2)+6
-8+12-10+6
4-4=0
Sox+2 is factor of equation

Answer 2

x+2
x= -2
=-2^3+3×-2^2+5×-2+6
=-8+12-10+6
=-8+2+6
=-8+8
=0
yes x+2 is a factor