dydx+2x1+x2(y)=1(1+x2)2\frac{dy}{dx}+\frac{2x}{1+x^2}\left(y\right)=\frac{1}{\left(1+x^2\right)^2}dxdy+1+x22x(y)=(1+x2)21
40⋅15−(−20)⋅7+(−32)⋅(−13)40\cdot15-\left(-20\right)\cdot7+\left(-32\right)\cdot\left(-13\right)40⋅15−(−20)⋅7+(−32)⋅(−13)
25a2b2−49b425a^2b^2-49b^425a2b2−49b4
6a−12b+8a−14b6\sqrt{a}-12\sqrt{b}+8\sqrt{a}-14\sqrt{b}6a−12b+8a−14b
x84y3\sqrt[4]{x^8}y^34x8y3
2cos(3x)+1cos\frac{2cos\left(3x\right)+1}{cos}cos2cos(3x)+1
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