Question

(3m – 2) 2– 2(m – 4)(m + 3) + (2m – 1)(2m + 1)

Answer 1

6m-4-2(m^2+3m-4m-12)+4m^2+2m-2m-1=
6m-4-2m^2+2m+24+4m^2-1=
2m^2+8m-5

Answer 2

(3m-2)²-2(m-4)(m+3)+(2m-1)(2m+1) =
9m²+4-12m-2(m²+3m-4m-12)+4m²-1 =
9m²+4-12m-2m²+2+24+4m²-1 =
11m²-12m+29