Answer:
x^4 + 5x^3 - 12x^2 + 5x + 1
( x - 1 ) ^ 2 ( x ^ 2 + 7 x + 1 )
Step-by-step explanation:
Sorry about the spaces, thought it would make it look better!
x=4
Since x+2 is half the size of 3x:
2(x+2)=3x
2x+4=3x
4=3x-2x
2
15/22
