$-10^2-5\left(-10\right)+10$
$\int_1^k\frac{1}{x^3+x}dx$
$x=4s+2t$
$8x-7=33$
$\frac{dy}{dx}=\left(x+1\right)^2y^3$
$\frac{d^4y}{dx^4}+\frac{d^2y}{dx^2}=x^2+x$
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