Question

Pls fasttttttttttt
if a= -1 b=2 c= -3 .
ab - bc - ca
a² (b-c ​

Answer 1

ab _bc_ ca= _3= 1

a^2(b_c= 5

Explanation:

ab_bc_ca={_1}(2)_(2)(_3)_(_3)(_1)

a^2{b_c)=1^2(2_ _3)