$\frac{3x^2+4x+10}{x\:-\:2}$
$\int2^x\sin\left(3\cdot2^x\right)$
$\int\left(-5\cdot5^x\right)dx$
$\log_b\left(\frac{4}{49}\right)=-2$
$\frac{\cos^2x}{\csc^2x}=\frac{\sin^2x}{\sec^2x}$
$\left(x+1\right)\left(x^2-x+1\right)+\left(x-1\right)\left(x^2+x+1\right)$
$-3a^2-2a+1$
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