(20 PTS) Someone explain to me why this is the case

i is an imaginary number because i = and you can never take a square root of a negative number.  Because i is equal to when you square it it just removes the square root sign and gives you -1

Step-by-step explanation:

cut 138 centimeters off

step-by-step explanation:

250-112 = 138

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.