$4x^2-2y=6$
$x ^ { 5 } - 3 x ^ { 4 } + 4 x ^ { 2 }$
$2\sqrt{75}-\sqrt{48}$
$3\left(8c-6\right)+2\left(-2c+5\right)$
$-6+9+3-6+4-1+5-3+6$
$\frac{1-\cos\left(a\right)}{1+\cos\left(a\right)}$
$5x+13\ge-37$
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