How do I do this problem?
simplify (20)^1/2.. it looks easy but I have no idea.
also....
simplify and rationalize the denominator: 8/[6+(2y)^1/2
do i multiply by 6+(2y)^2? is(2y)^1/2 the same as the sqrt of 2y?
how do i get started with this.. I got the first step.. I think, but not sure what to do after that.. -6x=3x^2-2
I got 3x^2+6x-2 = 0
do i divide everything by 3? then do the quadratic formula?
is this the correct answer for this one? x^2+-3x+3
this is what i did: -x^2-3x+3=0
-(-3) +/- sqrt (-3)^2-4(-1)(3)/2(-1)
3 +/- sqrt 9+12/-2
3 +/- sqrt 21/-2 answer.. is this the same as 3 +/- (21)^1/2?
simplify (20)^1/2.. it looks easy but I have no idea.
also....
simplify and rationalize the denominator: 8/[6+(2y)^1/2
do i multiply by 6+(2y)^2? is(2y)^1/2 the same as the sqrt of 2y?
how do i get started with this.. I got the first step.. I think, but not sure what to do after that.. -6x=3x^2-2
I got 3x^2+6x-2 = 0
do i divide everything by 3? then do the quadratic formula?
is this the correct answer for this one? x^2+-3x+3
this is what i did: -x^2-3x+3=0
-(-3) +/- sqrt (-3)^2-4(-1)(3)/2(-1)
3 +/- sqrt 9+12/-2
3 +/- sqrt 21/-2 answer.. is this the same as 3 +/- (21)^1/2?