$\int_{-\infty}^1\left(e^{-2x}\right)dx$
$5\cdot4^2-3\cdot2^2+2$
$10^{\left(x+2\right)\cdot\left(x-1\right)}=1$
$\sqrt{5}+3\sqrt{5}-6\sqrt{5}$
$f\left(x\right)=x\left(5-x\right)-2\left(2x-x^2\right)\:$
$\left(m-1\right)\left(m-6\right)$
$-2\left(90-2y-3z\right)y$
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