Question
If $4 x^{2}+4 y^{2}+4 h x y+16 x+32 y+10=0$ represents a circle, then $h$ is(a) 5(b) 0(c) $-2$(d) $-5$
Step 1
We know that the standard form of a circle is $x^{2}+y^{2}+2gx+2fy+c=0$. Show more…
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