Question

1.当a=3,b=3时,分别求a^2-ab+b^2,(a-b)^2的值,

Answer 1

当a=3,b=3时,分别求a^2-ab+b^2=9,(a-b)^2=0

当a=5,b=-3时,分别求a^2-ab+b^2=49,(a-b)^2=64

a^2-ab+b^2 - (a-b)^2=ab

a=100,b=1,a^2-ab+b^2 =10000-100+1=9901,9901-99^2=100,99^2=9801