x2+4x−2xx^2+4x-2xx2+4x−2x
22 − 2⋅1422\:-\:2\cdot1422−2⋅14
−52\sqrt{-52}−52
n3n7\frac{n^3}{n^7}n7n3
4n+3z−2n+z4n+3z-2n+z4n+3z−2n+z
x2 −3x + 5 para x=0x2\:-3x\:+\:5\:para\:x=0x2−3x+5parax=0
42+32−64^2+3^2-642+32−6
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