Question

xdx
Evaluate
(x2 +4)(x2+1)​

Answer 1

Answer:

(x² +4)(x²+1)

(x+a)(x+b)=x²+(a+b)x+ab

in tis case

x=x²

a=4

b=1

by putting the value

(x² +4)(x²+1)=(x²)²+(4+1)x+4×1

(x² +4)(x²+1)=x⁴+5x+4