$\left(sinx+cosx\right)^2-2sinxcosx=1$
$f\left(x\right)=\left(x^2+4x-5\right)^2$
$\sqrt{x+3}+6+5$
$2y=x+1$
$3\cdot\:\left(-3\right)\cdot\:\left(-5\right)\cdot\:\left(-7\right)$
$\sin\left(7.162\right)$
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