$400-58$
$-7\left(5+3-4-7\right)-1$
$1-cos^2\cdot1-sen$
$3xy+6x^2y+9xy^2$
$3\left(x+y\right)=2\left(x-4y\right)+13$
$\left(\left(x+1\right)^2-3\left(x+6\right)\right)$
$\cos\left(o+\frac{\pi}{4}\right)$
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