Answer:
1. x+1
2. x + 2
3. x - 1
Step-by-step explanation:
1. x+1 x= -1
[tex]2x^{3} +5 x^{2} +4x+1[/tex]
P(- 1) = [tex]2(-1)^{3} +5(-1)^{2} +4(-1) +1 =0[/tex]
2. x+2 x= -2
[tex]4x^{3} +11x^{2} +8x+4\\[/tex]
P(-2) = [tex]4(-2)^{3} +11(-2)^{2} +8(-2)+4 =0[/tex]
3. x -1 x= 1
[tex]x^{4} +3x^{3} -2x^{2} -5x+3[/tex]
P(1) = [tex]1^{4} +3(1)^{3} -2(1)^{2} -5(1)+3 =0[/tex]