$11x^2-174x-588$
$-3b-5b-6b+3-2b+4b-4b-8$
$4\left(x+3\right)+6\left(x-3\right)$
$2sen\left(x\right)cos\left(2x\right)-2cos\left(x\right)sen\left(2x\right)$
$\left(f-2\right)^2$
$4sin^2x+2cos^2x=3$
$7a^2x-6b^2-4a^2x+8b^2+a^2x$
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