What is expand xydy+(x^2+y^2)dy ?

The solution to expand xydy+(x^2+y^2)dy is xydy+x^2dy+y^2dy

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expand xydy+(x^2+y^2)dy

expand

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

x y d y + x^{2} d y + y^{2} d y

Solution steps

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

Expand

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

= x y d y + x^{2} d y + y^{2} d y

(x^{2} - y^{2} e^{\frac{y}{x}}) d x + (x^{2} + x y) e^{\frac{y}{x}} d y

(a + b 2) (c + d 2)

(1 + 3 i)^{8}

lo g_{10} (4) x^{2}

(5 - x + 1)^{2}

What is expand xydy+(x^2+y^2)dy ?
The solution to expand xydy+(x^2+y^2)dy is xydy+x^2dy+y^2dy