$18x^2=65x-7$
$\left(\frac{4a^8}{3}\right)^{-2}$
$\sqrt{50x^4y^6}$
$6\left(y-1\right)+2\left(y+12\right)$
$3x^2-12x=3$
$\frac{\left(sinb+sinc\right)}{\left(2sin\left(\frac{b+c}{2}\right)\right)}-sin\left(\frac{a}{2}\right)$
$\left(7x+5\right)\left(4x-3\right)$
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