how do u square 290 3/7

$${\left({\mathtt{290}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{3}}}{{\mathtt{7}}}}\right)}^{{\mathtt{2}}} = {\mathtt{84\,348.755\: \!102\: \!040\: \!816\: \!326\: \!5}}$$

so for this u will have to multiply the whole number by the denominator and then add the numerator to it so in this case we'll do it like this

7 * 290 + 3

so 

2030 +3

=2033 

so now this will be our numerator and so our fraction is!

2033/7

now i hope u can do the rest yourself!u just have to take out the square root of both these separately and place as a fraction n divide!so see that easy it is!

hope it helps u!