Question

упрастите выражение (3m+2n)^2-10mn​

Answer 1

$(3m+2n)^2-10mn=9m^2+12mn+4n^2-10mn=9m^2+2mn+4n^2$

Answer 2

9m^2 +12mn + 4n^2 - 10mn = 9m^2 + 2mn +4n^2