$\frac{1}{2}\left(\cos\left(4x\right)-1\right)=\cos^2x$
$( 2 m + 7 ) ^ { 2 }$
$\left(x^2-n^3\right)\left(x^2+n^3\right)$
$\int x^3\sqrt{\left(x^2+9\right)}dx$
$x^2+4x+12y-8=0$
$35x^2y^3+28x^2y^3+x^2y^3-35x^2y^3$
$\log\left(5x+1\right)=\log\left(4x+2\right)$
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