$1.6\cdot47$

$-5\left(a-8\right)+4\left(a-b+11\right)$

$\left(\frac{3}{4}y\:+\frac{1}{3}\right)\:\:\left(\frac{3}{4}y-\frac{1}{3}\right)$

$1+5\cdot\left(4+9\right)\cdot3+2-1\cdot\left(3-2\right)$

$1.9=x$

$\int\left(\left(\tan\left(m\right)\right)^5\left(\sec\left(m\right)^2\right)\right)dm$

$\left(2-\sqrt{x+3}\right)^2$