$x^2-20x+20$
$\int\frac{4x+1}{6x^2+3x+5}dx$
$2x-3\le1$
$15 > \frac { 3 x + 1 } { 2 }$
$-a+\frac{3}{11}a$
$49a^{2}b^{2}=1$
$\sin\left(x\right)=0.25$
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