$4sin^2\left(x\right)+4cos^2\left(x\right)-3tan\left(x\right)cot\left(x\right)$

$\int\frac{9x^2-16x+5}{x\left(x-1\right)\left(x-2\right)}dx$

$\frac{\left(2x^5-5x^4+6x^3+4x^2-11x\right)}{\left(1-3x+2x^2\right)}$

$y=\frac{\sqrt{x^2-25}}{x^2+4x-12}$

$2\left(-1.55\right)+3$

$1=x^4+5y^3$

$2x^2-5x+5\ge0$