$-9\:+\:-41\:+\:-4\:+\:4$
$x^4+4x^3-10x^2-28x-15$
$42x^8+56x^4$
$x^2-8x-240=0$
$\frac{3}{2}\int_0^{2\pi}cos^4xdx$
$f\left(x\right)=cot\left[\sinh\left(7x-10x\right)^2\right]$
$9x^2-12x-5$
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