$sin2x+2sinx-cosx-1=0$
$a^2+4a+1$
$-5+x<3$
$3^2+33+72$
$x^4+4x^2+1$
$\left(\frac{\sqrt[3]{y}-2}{\sqrt[3]{y}}\right)^2$
$57.4-6.8+8.23$
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