$\int\sin^4\left(\frac{1}{2}\right)dt$
$21a^5b^2c^3-35a^4b^6c^4-49a^3b^3c^2$
$\left(7a-32\right)^2$
$\left(a^3-\frac{2}{3}\right)^2$
$4x^2-19x+12$
$\frac{\sqrt{25x^2y^2}}{5}$
$\left(6y+3\right)-\left(4y+2\right)$
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