根号下81*82*83*84+1等于几?

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根号下81*82*83*84+1等于几?

根号下81*82*83*84+1等于几?
根号下81*82*83*84+1等于几?

根号下81*82*83*84+1等于几?
原式=根号下81*(81+1)*(81+2)*(81+3)+ 1
=根号下[81*(81+3)][(81+1)*(81+2)]+1
=根号下(81^2+3*81)(81^2+3*81+2)+1
=根号下(81^2+3*81)^2+2*(81^2+3*81)+1
=根号下(81^2+3*81+1)^2
=81^2+3*81+1
=6561+243+1
=6805.

m=81*(81+1)*(81+2)*(81+3)+ 1
=[81*(81+3)][(81+1)*(81+2)]+1
=(81^2+3*81)(81^2+3*81+2)+1
=(81^2+3*81)^2+2*(81^2+3*81)+1
=(81^2+3*81+1)^2
原式=81^2+3*81+1
=6561+243+1
=6805

=根号下81*(81+1)*(81+2)*(81+3)+ 1
=根号下[81*(81+3)][(81+1)*(81+2)]+1
=根号下(81^2+3*81)(81^2+3*81+2)+1
=根号下(81^2+3*81)^2+2*(81^2+3*81)+1
=根号下(81^2+3*81+1)^2
=81^2+3*81+1
=6561+243+1
=6805.