$36x^2\cdot x^2-42^2$
$3-2^2\cdot4-2-2\cdot4^2$
$6,15555+25,32+68$
$x^2-8x+4=0$
$a^7b^3-3a^3b^2-ab$
$3x+2y+9x+8y$
$\frac{11}{5}-\sin\left(x\right)=2-\frac{3}{5}\sin\left(x\right)$
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