=( 1/7+2- 10)√7[ extracting common factor √7]

= (1/7+14/7-70/7) √ 7 [comprehensive score]

= [(1+14-70)/7] √ 7 [Fractions with the same denominator are added, the denominator is unchanged, and only the numerator is added]

=[﹣55/7]√7

The answer is: 55/7, and the root number is 7.

(2)4 symbols 2-3/2 root symbol 2+ root symbol 2

=(4-3/2+ 1)√2[ extracting common factor √2]

=(8/2-3/2+2/2)√2[ comprehensive score]

=[(8-3+2)/2]√2[ Fractions with denominator added, denominator unchanged, only numerator added]

=[7/2]√2

The answer is: 7 out of 2, and the root number is 2.