1. Calculate (1) (2m + n-p) ^ 2 (2) (x + 1) ^ 2 (x-1) ^ 2 (3) (x + y) ^ 2 (X-Y) (4) (2a-3b + C) (C-2A + 3b) with multiplication formula

1. Calculate (1) (2m + n-p) ^ 2 (2) (x + 1) ^ 2 (x-1) ^ 2 (3) (x + y) ^ 2 (X-Y) (4) (2a-3b + C) (C-2A + 3b) with multiplication formula

1）（2m+n-p)^2 =(2m+n)^2-2p(2m+n)+p^2=4m^2+4mn+n^2-4pm-2pn+p^2(2) (x+1)^2(x-1)^2 =(x^2-1)^2=x^4-2x^2+1(3)(x+y）^2(x-y) =(x^2-y^2)(x+y)=x^3+x^2y-xy^2-y^3(4)(2a-3b+c)(c-2a+3b)=c^2-(2a-3b)^2c^2-4a^2+12ab...

(a + b) (a-b) = A-B (complete square difference formula)?

Complete square formula: A & # 178; + 2Ab + B & # 178; = (a + b) & # 178; a & # 178; - 2Ab + B & # 178; = (a + b) & # 178; = (a-b) & # 178; = (a-b) & # 178; square difference formula: A & # 178; - B & # 178; = (a + b) (a

Is (a-b) (a + b) a square difference formula?

Is (a-b) (a + b) = a ^ 2-B ^ 2