$\left|-14+3\left(-2\right)+15\right|+\left|7-8\right|\cdot\left|-1+3\right|$

$\int_1^4\frac{s^4-8}{s^2}ds$

$\int\frac{70}{x\left(x+10\right)\left(x^2+4x+24.542\right)}dx$

$125x^9-64y^{15}$

$3-x^2+2abx^2-6ab$

$\left(-10\right)^{12}:\:\left(-10\right)^{10}-5.\left(-3+2\right)$

$3\cdot1-4\cdot.5$