$-\sqrt{121}+15$
$\left(1+x\right)\left(1-x\right)^n$
$\lim_{x\to4}\left(\frac{x^2-5x-24}{x^2-9}\right)$
$\left(3a-2b+2c\right)^2$
$\frac{dy}{dx}=\frac{e^{2x}-5}{e^{2x+7y}}$
$\left(-65\right)\left(28\right)$
$\left(4x-1\right)-+39$
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