$-12+4\left(-4-\sqrt{6+10}\right)^2$

$y2-12y-36$

$\csc\left(60\right)^2+\sec\left(60\right)^2-\cot\left(60\right)^2$

$\lim_{x\to-\infty}\frac{\sqrt{2x^4-2x^3-1}}{2-3x^2}$

$100x^5y^6and50x^3y^3$

$6\sin x^2$

$\left(a^2+dx+5\right)-30x^2+2\cdot\left(15-a\right)-d;a=7;d=4;x=9$