$-2x=-2x^2+4$
$\left(c+10\right)^5$
$\cos\left(\frac{\pi}{2}-x\right)=\frac{2}{7}$
$( 4 p q - 3 q ) ^ { 2 }$
$\left(9a-5c\right)\left(2a^3+8c^4\right)$
$7x\:+\:88=11$
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