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Solve the system by addition method
- Thread starter soprano
- Start date
Actually, it is incredibly easy.
Look at it. Like in the other problem, make a substitution.
From the second equation, we see that \(\displaystyle x^{2}=y^{2}\)
Sub into the first:
\(\displaystyle 2x^{2}=200\)
Now, finish.
Look at it. Like in the other problem, make a substitution.
From the second equation, we see that \(\displaystyle x^{2}=y^{2}\)
Sub into the first:
\(\displaystyle 2x^{2}=200\)
Now, finish.
No.. you just need practice. That is correct. Just relax and don't let all those x's and y's befuddle you. They are just numbers.
When you see two equations with two variables. Solve one for a variable and sub into the other. that way you whittle it down to one equation with one variable you can solve.
When you see two equations with two variables. Solve one for a variable and sub into the other. that way you whittle it down to one equation with one variable you can solve.