What is expand (9x^2+y-1)dx-(4y-x)dy ?

The solution to expand (9x^2+y-1)dx-(4y-x)dy is 9x^2dx+ydx-dx-4ydy+xdy

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expand (9x^2+y-1)dx-(4y-x)dy

expand

(9 x^{2} + y - 1) d x - (4 y - x) d y

9 x^{2} d x + y d x - d x - 4 y d y + x d y

Solution steps

(9 x^{2} + y - 1) d x - (4 y - x) d y

Expand

d x (9 x^{2} + y - 1) : 9 x^{2} d x + y d x - d x

= 9 x^{2} d x + y d x - d x - (4 y - x) d y

Expand

- d y (4 y - x) : - 4 y d y + x d y

= 9 x^{2} d x + y d x - d x - 4 y d y + x d y

- 3 (- 2 x)^{2} + 5 (- 2 x)

\frac{2 x ^{3} - 1}{( x ^{3} + 1 ) ^{2}}

\frac{14}{3 ( 2 s + 3 )}

\frac{( - 3 - x ) ^{2}}{2}

\frac{a s + b + 3 a + 1}{s ( s + 1 ) ( s + 2 )}

What is expand (9x^2+y-1)dx-(4y-x)dy ?
The solution to expand (9x^2+y-1)dx-(4y-x)dy is 9x^2dx+ydx-dx-4ydy+xdy