$5\log\:_a\left(y\right)-2\log\:_a\left(x+4\right)=2\log\:_a\left(y\right)+\log\:_a\left(x\right)$
$\frac{1-cos^4x}{1+cos^2\:x}$
$4y-29-97+36$
$343m^{3\:+\:64^3}$
$\left(a^4-6\right)\left(a^4+6\right)$
$5=v+4$
$\left(9a-11b+5c+8d\right)-\left(a+8b-7c-2d\right)$
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