Quote:after half of the formula I have, -3 - Sqrt +9-4 /2*1.. my question is simple and two part.
1) to Sqrt the 9 I must also Sqrt the 4 or calculate the sum of 9-4 then Sqrt before manipulating change from outside the Sqrt right?
2) please insert parenthesis to solve including signs.
Stu::D
OK, so I get the quadratic formula. it ain't such a tough nut rather it is more like a gentle baby. but to save upsetting it on this day of romance I'd like to resolve one thing about square rooting in maths/this formula.
assuming you are solving x2+3x+1=0
after half of the formula I have [-3 - Sqrt (+9-4)] / (2*1).. my question is simple and two part.
1) to Sqrt the 9 I must also Sqrt the 4 or calculate the sum of 9-4 then Sqrt before manipulating change from outside the Sqrt right?
You have to find 9-4 =5 and THEN take the square root.
2) please insert parenthesis to solve including signs.
Stu:in fact please calculate in steps the following,
-6 + Sqrt 62-4*2*3 /2*3 include parenthesis please.
I got x1=-0.634
if m answer is right don't worry to solve. thanks
thanks melody, I see they will not always be nice simple numbers do I round of at 3 decimal placings as a rule?
Rom:all I mean is to write sqrt(x) instead of sqrt x or sqrtx where x might be some complicated expression.
no fancy chars or images needed.
Melody:Now Stu, is there any other specific problems that we can help with.
perhaps you should make sure you have digested the last 2 posts that Rom and I have made first...
Quote:is the Sqrt which encloses everything under it the same as a parenthesis in and of it's self.
Stu:
And yes, I just had this question regarding transposing a square root posted in this thread.
side question ot, when removing Sqrt in transposing given t= sqrt2mg, solve for g. it is easiest to remove the Sqrt first I get that, but answer given is g = t2/2m. I was about to give this answer, but isnt everything under the Sqrt squared to remove it, so.. when transposing /2m shouldn't they be squared. I get that it isn't so I would just like to know why as I'm sure it is a simple answe.r. thanks. ie can't move the Sqrt with out moving the 2m to the left and squaring it also?