$4x^2-6x-9$
$36-12x+x^2=\left(6-x\right)^2$
$3\left(-2\right)+\left(-2\right)\left(-3\right)+\left(-3\right)-5\left(-1\right)+3$
$12.\left(-3\right)-5.\left(-4\right).\left(-1\right).\left(-2\right)$
$2x>2$
$0.35+4.15+9+0.50$
$70>y+40$
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