Limx tends to be 1 (the difference between radical X and 1) / (the difference between (3 + x) and (2)

Limx tends to be 1 (the difference between radical X and 1) / (the difference between (3 + x) and (2)

lim(x->1)[(√x-1)/(√(3+x)-2)]=lim(x->1)[((x-1)(√(3+x)+2))/((3+x-4)(√x+1))]
=lim(x->1)[(√(3+x)+2)/(√x+1)]
=(√(3+1)+2)/(√1+1)
=2；

If x under the root sign is multiplied by (the square of x minus 3) = 0, then the value of X is ()

If the following sign x is multiplied by (x ^ 2-3) = 0, then the following sign x = 0 or x ^ 2-3 = 0, that is, x = 0 or x = positive and negative following sign 3. Because of the following sign x, X should be greater than or equal to zero, that is, X is not equal to negative following sign 3, so x is equal to 0 or following sign 3

Four 8's plus operation sign equals 4?

(8*8)/(8+8)