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

What are the first few steps to solving this system by the substitution method?

xy=3

x^2+y^2=10

- math -
**drwls**, Sunday, November 9, 2008 at 9:05pm
Substitute 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 ...
- Calculus - Which of the following would be the best first step when solving the ...
- algebra 1 - what steps someone would take to use your method (substitution) and ...

More Related Questions