$\left(3x^2+7x-4\right)-\left(8x^2-6x+2\right)$
$2+x=26$
$y-3x=5$
$4\left(2\right)^2-2\left(2\right)\left(-1\right)+3\left(-1\right)^2$
$2x^2+14x=1$
$\left(2y+1\right)tanx$
$\left(-3a+4x^3\right)\left(-3a+4x^3\right)$
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