Question

[8(a-b)^5-4(a-b)^4+(-a+b)3]/[2(a-b)^3]怎么算

Answer 1

[8(a-b)^5-4(a-b)^4+(-a+b)^3]/[2(a-b)^3]

=[8(a-b)^5-4(a-b)^4-(a-b)^3]/[2(a-b)^3]

=8(a-b)^5/[2(a-b)^3]-4(a-b)^4/[2(a-b)^3]-(a-b)^3/[2(a-b)^3]

=4(a-b)^2-2(a-b)-1/2

=4a^2-8ab+4b^2-2a+2b-1/2