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Radius is 3. Here is how: So you need to get two "square expressions". So there are y^2 but no y. So we have y^2. Then we have x^2 + 4x + (something). A perfect square is (x + 2)^2 = x^2 + 4x + 4. So we need to add 4 to both sides and we have x^2 + 4x + 4 + y^2 = 9. Or (x + 2)^2 + y^2 = 3^2. The radius is 3.
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Earn +20 ptsQ: What is the radius of x2 plus y2 plus 4x equals 5?
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X2 plus y2 plus 4x - 2y - 5 equals 0?
No.
What is x2 plus 4x plus 4 equals 25?
x2+4x+4 = 25 x2+4x+4-25 = 0 x2+4x-21 = 0 (x+7)(x-3) = 0 x = -7 or x = 3
Find the radius for a circle with the equation x2 plus y2 equals 9?
Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..
Can you put the equation x2 plus 4x plus 10 equals 3 in the form ax2 plus bx plus c equals 0?
x^2+4x+7
2x equals x2 plus 4x-3?
2x = x2 + 4x - 3 x2 + 2x - 3 = 0 (x - 1)(x - 2) = 0
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