Q. Write the equation in standard form for the circle x2+y2−16=0.
Identify equation and goal: Identify the given equation and the goal.The given equation is x2+y2−16=0. We need to write this equation in the standard form of a circle, which is (x−h)2+(y−k)2=r2, where (h,k) is the center of the circle and r is the radius.
Move constant term: Move the constant term to the other side of the equation.To get the equation in standard form, we need to isolate the terms with x and y on one side and move the constant to the other side. We do this by adding 16 to both sides of the equation.x2+y2−16+16=0+16This simplifies to:x2+y2=16
Verify standard form: Verify the standard form of the circle.The equation x2+y2=16 is now in the standard form of a circle with a center at (0,0) and a radius of 4, since 16 is the square of 4.
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