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March 6, 2015

March 6, 2015

Posted by **Keith** on Wednesday, May 19, 2010 at 2:44pm.

3x^2 + 4y = 17

2x^2 + 5y = 12

- pre calc -
**drwls**, Wednesday, May 19, 2010 at 4:46pmMultiply the first equation by 2 and the second equation by 3, and subtract one from the other. That will eliminate the x^2 variable.

6x^2 + 8y = 34

6x^2 + 15y = 36

7 y = 2

y = 2/7

2x^2 = 12 - 5y = 12 - 10/7

= 74/7

x = sqrt(37/7) = 2.299

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