В1.
((x0)^(1/2))^2 = 9
=> |x0| = 9
=> x0^2 = 81
=> (x0^2 - 1)/10 = 80/10 = 8
B2.
( 2 + ( 3 + x^(1/2) )^(1/2) )^(1/2) = 2
2 + ( 3 + x^(1/2) )^(1/2) = 4
( 3 + x^(1/2) )^(1/2) = 2
3 + x^(1/2) = 4
x^(1/2) = 1
x = 1
С1.
x^(1/2) при x >=0
(-x)^(1/2) при -x >= 0, т.е. при x <= 0<br> x^(1/2) * (-x)^(1/2) - при 0 <= x <= 0, т.е. при x = 0