Question
$1.00 Solving Quadratic Equations w/ India Method
- From Mathematics: Algebra
- Closed, but you can still post tutorials
- Due on Oct. 25, 2009
- Asked on Oct. 24, 2009 at 11:56:52AM
Q:
Hi there. This week, we are working on solving quadratic equations using a method from India. There is only one example, and I was hoping to find more help with these equations so I can use them to reference to:
x2 - 2x - 13 = 0
4x2 - 4x + 3 = 0
x2 + 12x - 64 = 0
2x2 - 3x - 5 = 0
$1.00
correct answer with detailed shown
- This tutorial was purchased 3 times and rated A+ by students like you.
- Posted on Oct 24, 2009 at 12:39:01PM
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A:
Preview: ... 1= 0 Now, re-group so that the quadratic is a "square": (x^2 - 2x + 1) - 13 - 1 = 0 Factor, and then solve for "x": (x-1)^2 -14 = 0 (x-1)^2 = 14 (x-1) = +/- sqrt(14) x ...
The full tutorial is about 204 words long .
- This tutorial has appended information.
$1.00
correct answer with detailed shown
- This tutorial was purchased 1 time and rated No Rating by students like you.
- Posted on Oct 24, 2009 at 1:54:13PM
Posted by :
A:
Preview: ... x^2+12x-64+6^2-6^2=0
x^2+12x+6^2-64-6^2=0
(x+6)^2-100=0
(x+6)^2=100
x+6=+/- sqrt(100)
x=-6 +/- 10
Thus, the solut ...
The full tutorial is about 67 words long .