$-5\cdot7+\left(12-5\cdot\left(-3\right)\right)$
$364\:+\:938\:+\:30\:+\:-884$
$72x^2-12x+24$
$\left(ab+1\right)^3\left(a^2b^2-ab+1\right)^3$
$15x^2+5x^2+x-5\:entre\:3x+2$
$3x^2-5x+4;\:x=6$
$\left(x+2\right)^2-\left(y+1\right)^2$
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