$16+40y+25y^2$
$\frac{1}{sec^2x-1}$
$x^3+0x^2+0x^0-27$
$12+11+11+12+13+14+13+14+12+11+14+15+1$
$\left(1\right)^2+4$
$35-24.1$
$y'=-y$
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