1+2+6−60+31+2+6-60+31+2+6−60+3
20b+60c20b+60c20b+60c
6x+2x+x2+16x+2x+x^2+16x+2x+x2+1
c18+m42c^{18}+m^{42}c18+m42
n4+4<7\frac{n}{4}+4<74n+4<7
9x2−6x+89x^2-6x+89x2−6x+8
(4+2).4\left(4+2\right).4(4+2).4
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