Question

Divide as direct 40xys (x+y)(y+z)(z+x)/10x(y+z)(z+x)

Answer 1

$\frac{40xys(x + y)(y + z)(z + x)}{10x(y + z)(z + x)} \\ 4ys \times (x + y) \\ 4sy \times (x + y) \\ 4sxy + 4s {y}^{2}$