Saturday

December 20, 2014

December 20, 2014

Posted by **RiRi** on Sunday, November 9, 2008 at 8:34pm.

xy=3

x^2+y^2=10

- math -
**drwls**, Sunday, November 9, 2008 at 9:05pmSubstitute 3/x for y in the second equation, and solve the resulting equation for x.

x^2 + 9/x^2 = 10

x^4 - 10x^2 + 9 = 0

(x^2 - 1)(x^2 - 9) =

x = 1, -1, 3 or -3.

**Answer this Question**

**Related Questions**

Math - 1. Explain the advantages and disadvantages of both the substitution ...

MATH - Solving by graphing DQ 1 Solving by substitution Solving by elimination ...

algebra - Explain why the addition method might be preformed over the ...

Algebra - Solving system of linear equations by using the apropiate method name ...

Algebra - When is the substitution method a better method than graphing for ...

algebra 1 - I was just wondering if anybody could explain to me the steps in '...

Algebra - Explain why the addition method might be preferred over the ...

Algebra - Explain why the addition method might be preferred over the ...

algebra 1 - what steps someone would take to use your method (substitution) and ...

algebra 1 - what steps someone would take to use your method (substitution) and ...