Question

(2m-n)²=4m²-........ +n²,Fill in the blank.

Answer 1

4m^2-4mn+n^2

hope it helps you dear..

Answer 2

BONJOUR,
❤ ❤ ❤

$(2m - n) {}^{2} \\ (2m) {}^{2} - 2 \times 2m \times n + n {}^{2} \\ = 4m {}^{2} - 4mn + n {}^{2}$