$5cos\:\left(x\:+\frac{\pi}{4}\right)$
$7sin\left(2x\right)+cos\left(x\right)=0$
$b^2-10b-25$
$5x^4-26x^3+15x^2+38x-8$
$\left(a^{x+1}\right)^2-\left(2b^{x-1}\right)^2$
$\left(x-7\right)\left(x-2\right)\left(x-6\right)$
$z^2+22z+112$
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