S silverdragon316 Junior Member Joined Mar 16, 2007 Messages 76 Oct 5, 2008 #1 I know how to use the formula m=Y2-Y1 X2-X 1 In this problem: P(2,square root7); Q(square root 7,2) how do you do this problem with a square root in the problem? Note: the 7 is suppose to be under a square root symbol. I don't know how to kae the symbol. Thank you
I know how to use the formula m=Y2-Y1 X2-X 1 In this problem: P(2,square root7); Q(square root 7,2) how do you do this problem with a square root in the problem? Note: the 7 is suppose to be under a square root symbol. I don't know how to kae the symbol. Thank you
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,203 Oct 5, 2008 #2 It doesn't matter about the square roots. There is a simple observation to make. Set it up and take a peek. \(\displaystyle \frac{2-\sqrt{7}}{\sqrt{7}-2}\) What does that equal?. In other words, what does \(\displaystyle \frac{a-b}{b-a}\) equal?.
It doesn't matter about the square roots. There is a simple observation to make. Set it up and take a peek. \(\displaystyle \frac{2-\sqrt{7}}{\sqrt{7}-2}\) What does that equal?. In other words, what does \(\displaystyle \frac{a-b}{b-a}\) equal?.
