Question 371838
1. {{{a^2(b-c)^2 = 3^2(-2--1)^2 = 9*(-1)^2 = 9}}}

2. {{{ a^e+by+cx = 3^2 + -2*2 + -1*-4 = 9-4+4 = 9}}}

3. {{{(xyz)^2-(abc)^2 =(-4*2*6)^2 -(3*-2*-1)^2 = (-48)^2-6^2 = 2268}}}