Could someone walk me through (baby steps, please) solving this equations: 2x^2 - 20x + 8 = 0
K kjones New member Joined Jun 1, 2006 Messages 44 Jun 1, 2006 #1 Could someone walk me through (baby steps, please) solving this equations: 2x^2 - 20x + 8 = 0
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,339 Jun 2, 2006 #2 kjones said: Could someone walk me through (baby steps, please) solving this equations: 2x^2 - 20x + 8 = 0 Click to expand... Remove common factors x^2 - 10x + 4 = 0 Move the constant term x^2 - 10x = -4 Calculate the new constant term 10/2 = 5 5^2 = 25 Adjust the equation x^2 - 10x + 25 = -4 + 25 Factor and Simplify (x-5)^2 = 21 Finish Up x-5 = sqrt(21) and x-5 = -sqrt(21) x = 5 + sqrt(21) and x = 5 - sqrt(21) One for free. You show us the next one.
kjones said: Could someone walk me through (baby steps, please) solving this equations: 2x^2 - 20x + 8 = 0 Click to expand... Remove common factors x^2 - 10x + 4 = 0 Move the constant term x^2 - 10x = -4 Calculate the new constant term 10/2 = 5 5^2 = 25 Adjust the equation x^2 - 10x + 25 = -4 + 25 Factor and Simplify (x-5)^2 = 21 Finish Up x-5 = sqrt(21) and x-5 = -sqrt(21) x = 5 + sqrt(21) and x = 5 - sqrt(21) One for free. You show us the next one.