$\left(a^2+2ab-15^2\right)$
$b+b$
$\sqrt[3]{a^{15}b^9}$
$\int_0^{\sqrt{x}}\left(\frac{1}{\left(9+x^2\right)^{\frac{3}{2}}}\right)dx$
$0.01\left(x-10\right)^2+30\:$
$2 x ^ { 2 } + 3 x + 1 = 0$
$sin^2\left(u\right)+cos^2\left(u\right)$
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