Question

x4 + x2 + 1 [Hint: Add and subtract x2.]​

Answer 1

Answer:So by following the hint,

=x4+x2+1+x2-x2

=(x2+1)^2-x2

=(x2+1+x)(x2+1-x)

I hope it helps you.☺

Step-by-step explanation:

Answer 2

= x4+x2+1+x2-x2

= (x2+1)2-2x = (x2+1+x) ( x2+1-x)