$0.7\cdot0.9$

$\left(2-3\right)^2+5\left(2\right)$

$-7x^2+70x-42$

$\left(8x^4-64x^3-8x^2-64x-32\right)\left(\frac{x}{\left(8\right)}+12\right)+\left(-32\right)$

$\int\left(\left(5x^2+8x+3\right)^3\right)\left(20x+16\right)dx$

$\left(+5\right)+\left(+3\right)-\left(-2\right)$

$\frac{x^29}{x+3}$