Question

Without actual calculation find 104×97 (polynomial)

Answer 1

see 104×97=(100+4)×(100-3)
now use the identity (x+a)(x+b)=x²+(a+b)x+ab
=100²+(4-3)×100+4×-3
=10000+100-12
=10088

Answer 2

10088 is the answer...