<PRE><B>Question 167395</B>
Will someone PLEASE HELP!!!
write an equation for the circle with center (-4, sq. root 7) and radius of 5 units.
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The general eqn of a circle is:
{{{(x-a)^2 + (y-b)^2 = r^2}}} where the center is at (a,b) and the radius is r.
For the one you entered, it&#39;s
{{{(x+4)^2 + (y-sqrt(7))^2 = 25}}}
That can be manipulated and shown as:
{{{x^2 + 8x + 16 + y^2 -2y*sqrt(7) + 7 = 25}}}
{{{x^2 + y^2 + 8x -(2sqrt(7))y = 2}}}




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