Find the value of p and q that make the function continuous

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Homework Statement



Find the value of p and q that make the function continuous

Homework Equations


f(x)= x-2 if x≥2
\sqrt{p-x^{2}} -2<x<2
q-x if x≤-2

The Attempt at a Solution


lim f(x)= x-2
n→2+

lim f(x)=q-x
n→-2

I really have no idea how to continue,the teacher never explained this and I have a test tomorrow please help!
 
Last edited:
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Does q= -2 and p=4 ?
 

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