What is expand 3x(xy-3)dx+(x^2+2y)dy ?

The solution to expand 3x(xy-3)dx+(x^2+2y)dy is 3x^2ydx-9xdx+x^2dy+2ydy

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expand 3x(xy-3)dx+(x^2+2y)dy

expand

3 x (x y - 3) d x + (x^{2} + 2 y) d y

3 x^{2} y d x - 9 x d x + x^{2} d y + 2 y d y

Solution steps

3 x (x y - 3) d x + (x^{2} + 2 y) d y

Expand

3 x d x (x y - 3) : 3 x^{2} y d x - 9 x d x

= 3 x^{2} y d x - 9 x d x + (x^{2} + 2 y) d y

Expand

d y (x^{2} + 2 y) : x^{2} d y + 2 y d y

= 3 x^{2} y d x - 9 x d x + x^{2} d y + 2 y d y

\frac{x ^{2} - x - 4}{x ^{2} ( x + 1 )}

(- x + y + z = 3) \cdot (2)

(7 x + 10 = 1, 4) (x - 2 y = 10)

2 (π x^{4} - π x)

(- d + 2 (\frac{84}{d}) - 2 = 0) d

What is expand 3x(xy-3)dx+(x^2+2y)dy ?
The solution to expand 3x(xy-3)dx+(x^2+2y)dy is 3x^2ydx-9xdx+x^2dy+2ydy