$6x+2y=-2$
$\sqrt[4]{2^7}.3^{14}.5^4$
$\:9x^6-16y^8$
$\left(1-\sin^2\right)^3$
$\:\left(-1\right)\left(+1\right)\left(-2\right)\:-\:\left(+7\right)\left(+3\right)\left(-1\right)\:-\:\left(+2\right)\left(-5\right)$
$3x^2-12x+7=0$
$\left(2x-3y\right)\left(5x-3y\right)$
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