Question

(9x-3y)²+108 xy=(9x+3y)²​

Answer 1

Step-by-step explanation:

(9x-3y)²+108 xy=(9x+3y)²

${9x - 3y}^{2} + 108x \\ 81 {x}^{2} - 54xy + 9 {y}^{2} + 108xy \\ 81 {x}^{2} + 54xy + 9 {y}^{2} \\ (9x + 3y) {}^{2}$