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Recent problems solved by 'DeChella'

DeChella answered: 1 problems
Quadratic_Equations/282997: Solve by factoring and using the principle of zero products.
(x-2)(x-7) = -6

1 solutions
Answer 205446 by DeChella(1) About Me  on 2010-03-19 20:51:08 (Show Source):
You can put this solution on YOUR website!
after factoring it you get
x%5E2-9x%2B14=-6
add 6 to both sides
x%5E2-9x%2B20=0
use the quadratic formula to solve
-b%2B-sqrt%28+b%5E2-4ac+%29%2F2a
9%2B-sqrt%289%5E2-4%281%2A20%29%29
9%2B-sqrt%2881-80%29+
9%2B-sqrt%281%29
(9+or-1)/2
x=5 or 4