Which of the following radical equations has only extraneous solution(s)? What are the extraneous solution(s)? A. x=x+72−−−−−√;−8
B. x−−√+1=x−17−−−−−√;81
C. x−−√−5=20;625
D. x−4−−−−−√=16−4x−−−−−−√;5

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x

Can you me find the slope! (30 points)