$3x^2-30x+70$
$x^{2}-12x+40=0$
$\sin\left(\frac{11}{61}\right)^2+\cos\left(x\right)^2=1$
$-6x^2+72x^2x$
$\left(b+1\right)^2+4\left(b+1\right)$
$a^2-16a-36$
$8x+4$
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