$-220+250-200+330+170+140-160$
$49\int x^6sec^4\left(x^7\right)dx$
$\frac{6x^2+26x+24}{3x+4}$
$y=ln\left(\frac{\sqrt{4+x^2}}{x}\right)$
$\left(\frac{4}{3\sqrt[3]{x}}\right)^2$
$b^nb^n$
$a^2+8a-16$
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