Question

Quadrado da diferença de dois termos (x/3-y) elevado a 2 ​

Answer 1

$( \frac{x}{3} - y)^{2} \\ \\ = ( \frac{x}{3})^{2} - 2 \times \frac{x}{3} \times y + (y)^{2} \\ \\ = \frac{ {x}^{2} }{9} - \frac{2xy}{3} + {y}^{2}$