Factor Completely...3

[nycmathguy]

College Algebra
Chapter 1/Section 5

 

[MathLover1]

122 should be

x^4+x^3+x+1 factor
(x^4+x^3)+(x+1)
x^3(x+1)+(x+1)
(x^3+1)(x+1)......... (x^3+1)= (x + 1) (x^2 - x + 1)
(x + 1) (x^2 - x + 1)(x+1)
(x + 1)^2 (x^2 - x + 1)

124 is correct

 

[nycmathguy]

122 should be View attachment 3935

x^4+x^3+x+1 factor
(x^4+x^3)+(x+1)
x^3(x+1)+(x+1)
(x^3+1)(x+1)......... (x^3+1)= (x + 1) (x^2 - x + 1)
(x + 1) (x^2 - x + 1)(x+1)
(x + 1)^2 (x^2 - x + 1)

124 is correct

Thank you for all corrections through each thread.