$9sin\left(x+60\right)=4$
$3x^2+25x^2+36x-36$
$9x^2+12x=45$
$\frac{9}{4}.\:40$
$9a^2-1$
$3\left(2a-b\right)-4\left(a\:+\:b\right)$
$\frac{16a^3+24a^2+6a+20}{2a+3}$
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