[最も選択された] x(x y)^3-3x^2y(x y) factorise 288417-Example 2 quad factorise x(x-y)^(3)+3x^(2y(x-y)

The trick is to solve for one variable (such as y) in terms of the other variable (x) From the first equation, we know that y = 3x 15 Now, use the formula in the second equation 2x 3 (3x 15) = 17 That is, 7x 45 = 17 So, 7x = 28 or x = 28/7 = 4