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-sqrt(5!^3-1234*567-1027838)-87+64=n

n^12345678-87+88-2=x

x=?

sqrt(5!^3-1234*567-1027838)-87+64=sqrt(120^3-699678-1027838)-23

                                                 =sqrt(1728000-1727516)-23

                                                 =sqrt(484)-23

                                                 =22-23

                                                 =-1

Therefore n=-1

Thus,n^12345678-87+88-2

        =-1^12345678-87+88-2

        =1-87+88-2

        =0

Therefore x=0

Is it right?

Thus,  

yep you got it certainly right!

yes its right