$\left(5\cos^{2}x\right)\left(1-\csc^{2}x\right)=-\cos^{2}x$
$( 3 x ^ { 2 } - 2 ) ^ { 3 }$
$25x^2+30x+1$
$2^{1.2}$
$\left(y^2+2c^8\right)\left(y^2-2c^8\right)$
$\left(3x+4\right)\left(x+4\right)$
$4a^2-4a+1$
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