<span>which answer is equal to 2√-28? basically, this question wants you to simplify 2</span>√-28. find a perfect square that you can pull out of -28: -4 works just fine.
2√-28 = 2√(-4 · 7)i ... take the √-4 out. the root of -4 is 2i 2(2i)√7... multiply 2*2i 4i√7 is your result. <span>
which answer is the solution to √2x-7 - √x = 1 ? i've tried, like, every method i know of for this problem and for some reason my answer keeps getting messed up. i entered it into my calculator and got x = 16, so i assume that's your answer, but i'm sorry i couldn't show you any work for it.</span>
