Question

Can somebody help me with this? (radicals)

Answer 1

can you see the error in the first step on the second part of distrubuting sqrt(3)?

Answer 2

No?.. I honestly have no clue how to do anything with radicals.. Radicals are like my worst enemies right now ;-;

Answer 3

oh haha ok ok, i will back track then, in our case right now, just pretened sqrt(3) is X
so, the equation would look like x(-2 + sqrt(20)), can you distrubute the x?

Answer 4

so it should look like this:
-2x + x*sqrt(20)

Answer 5

Oh wait.. So is the answer A. the student did not properly distribute the radicals?

Answer 6

yes, do you understand why though?

Answer 7

I think i do o:

Answer 8

great! :)