$4^7\cdot4^{-2}$
$9x^{4}-5x+3\quad\left(-10x^{2}+8x-7\right)$
$\left(y+6\right)\left(y-2\right)$
$-60y^2+2000y-30000$
$\frac{y}{2}+1=3$
$\int\left(\frac{1}{2}tsin4t^2\right)dt$
$\int_5^{10}bx^2dx$
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