$x^2-2x^2+1$
$631\:-897$
$\frac{\left(+3\right).\left(-8\right)+\left(-4\right).\left(-10\right)}{\left(-8\right)}$
$\left[4-\left(1-3\right)^2\:2\right]$
$4+\csc\left(x+\frac{\pi}{3}\right)=6$
$3\left(x+2\right)^2+2$
$6\sin^2\left(x\right)=-13\sin\left(x\right)-7$
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