Andrew solved the equation: 4/x^2-8x 12 =x/x-2 1/x-6. he said that 2 is an extraneous solution because it creates a 0 in the denominator. is andrew correct in his thinking? explain how you know.

Plzzz asapppppp what is the inverse of f if f(x)=^3 sqrt x-5

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling