Here's the question you clicked on:
bhruifafn
2x^2+8x=-1
yes, if difficult use quadratic formula
-2 plus or minus (sqrt 14 / 2)
not an answer on the sheet
-4 plus or minus sqrt 14 over 2 -4 plus or minus sqrt 2 over 2 -4 plus or minus sqrt 14 over 4 -8 plus or minus sqrt 14 over 2
ok after a long time of being brain dead (i forgot how to do this) i got your answer. It's -4 plus or minus sqrt 14 over 2
Ok, so first let's plug it into the quadratic formula -b plus or minus √b^2-4*a*c --------------------------------- 2*a so we get -8 (+-) √8^2-4*2*1 / 2 * 2 let's use basic order of operations -8 (+-)√56 ----------- 4 Now, remember to simplify your radical as best as you can. -8(+-) 2√14 ------------- 4 but -8, 4 , and 2 all go into 2, so we can simplify all numbers by that (except the radical) so we get -4 (+-) √14 ------------ 2