$6+8+4+4$

$\int x^2sin\left(\frac{1}{3}x\right)dx$

$\frac{x^2+1}{x+2}$

$\left(\frac{n^{-1}}{n^{-8}}\right)^{\frac{5}{7}}$

$\frac{2sin\left(x\right)cos\left(x\right)}{\left(sin\left(x\right)+cos\left(x\right)\right)^2}=1$

$\int ( a - 10 ) ( a + 10 ) d a$