If |x + 1| > |2x - 5|, then :
Which of the following is a factor of 2x^4 + 1 + 3 x^2 ?
A 1 + 2x^2
B 4+x^2
C 2x^2 -1
D 3+x^2
Factorise: x^3-5x^2+2x+8
If x<7,then