$64^{2x+1}=8^{3x+5}$
$\sqrt{2}\cos\left(2x+\frac{\pi}{4}\right)$
$x^4-2x^3-x^2=0$
$p\left(x\right)=x^4+x^3+\left(8^2-6\right)x^2+8^2x-6\cdot\:8^2$
$y^{\left(2\right)}-60y+900$
$-12-\left(-9\right)$
$90\cdot\left(-8\right)+16\cdot4$
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