Question

(3m + n)elevado a 2 + 2n elevado a 2 forma reduzida

Answer 1

(3m+n)^2+(2n)^2
(3m)^2+2.3m.n+(n)^2+(2n)^2
9m^2+6mn+n^2+4n^2
9m^2+6mn+5n^2

Answer 2

(3m + n)² + 2n²
9m² + 6mn + n² + 4n² = 0m² + 6mn + 5n²