$x^2+2xy+y^2-1$
$a^2+6ab^2+9b^4$
$\left(x^{\frac{3}{2}}+3\right)\left(x^{\frac{3}{2}}-3\right)$
$12cos^2x+\:23\:senx=22$
$-5-64x$
$\left(a+5x\right)^7$
$y^4+22y^2+121$
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