It's a system like this
$$\begin{cases} x^2+y^2=25\\ y=x-2\end{cases}$$
and then says "solve it"
I have no idea what to do please help me.
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The Phenotype
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1The second equation allows you to plug $(x-2)$ instead of $y$ in the first one. Then you get a quadratic equation with one variable to solve. – CiaPan Jan 29 '18 at 16:43
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1"I have no idea what to do": solve it. – Jan 29 '18 at 16:43
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Why do you think the line is a tangent...? – CiaPan Jan 29 '18 at 16:44