$11t^2-153t-180$

$10-\left|-12-\left(-4\right)+\left(-6\right)\right|$

$\left(15\cdot3\cdot6\right):3$

$\left(x+1\right)^2+\left(x-2\right)\left(x+2\right)$

$\frac{1}{1+\log_a\left(bc\right)}+\frac{1}{1+\log_b\left(ac\right)}+\frac{1}{1+\log_c\left(ab\right)}$

$3x^4+6x^3-10x^2-x+6$

$\int\frac{15}{3x^2-2}dx$