x4+x2+1 এর উৎপাদক x2+x+1, অপর উৎপাদকটি কত?
A
x2+x+1
B
x2-x+1
C
x2+1
D
x+1
Correct Answer: x2-x+1
X4 + X2 + 1 = (X4 + 2X2 + 1) –X2 = (X2 + 1)2 - X2 = (X2 + 1 + X)(X2 + 1 - X)