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Write the equation in standard form for the circle x2+y2+10y25=0x^2+y^2+10y-25= 0.

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Q. Write the equation in standard form for the circle x2+y2+10y25=0x^2+y^2+10y-25= 0.
  1. Identify equation and need: Identify the given equation and the need to complete the square for yy.\newlineThe given equation is x2+y2+10y25=0x^2 + y^2 + 10y - 25 = 0. To write the equation in standard form, we need to complete the square for the yy terms.
  2. Group and leave space: Group the y y terms and leave a space for completing the square.x2+(y2+10y+)25=0x^2 + (y^2 + 10y + \underline{\hspace{1em}}) - 25 = 0We will add and subtract the same value inside the parentheses to complete the square.
  3. Calculate value for completion: Calculate the value needed to complete the square for yy.\newlineTo complete the square, we take half of the coefficient of yy, which is 102=5\frac{10}{2} = 5, and square it, resulting in 52=255^2 = 25.
  4. Add and subtract calculated value: Add and subtract the calculated value inside the parentheses.\newlinex2+(y2+10y+2525)25=0x^2 + (y^2 + 10y + 25 - 25) - 25 = 0\newlineNow we have the perfect square trinomial for yy and an extra 25-25 that we will move outside the parentheses.
  5. Write perfect square trinomial: Write the perfect square trinomial and simplify the equation.\newlinex2+(y+5)22525=0x^2 + (y + 5)^2 - 25 - 25 = 0\newlineCombine the constant terms on the right side.
  6. Simplify equation: Combine the constants and write the equation in standard form. \newlinex2+(y+5)250=0x^2 + (y + 5)^2 - 50 = 0\newlineAdd 5050 to both sides to get the standard form.\newlinex2+(y+5)2=50x^2 + (y + 5)^2 = 50

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