Mathematics, 15.04.2021 15:10 dianacastro8298
The equation 2x2+2y2β8xβ12y+16=0 2 x 2 + 2 y 2 β 8 x β 12 y + 16 = 0 defines a circle. Which of these shows a correct step for determining the center and radius of this circle? Choose all that are correct.
(2x2β8x+16)+(2y2β12y+36)=β16+36
(
2
x
2
β
8
x
+
16
)
+
(
2
y
2
β
12
y
+
36
)
=
β
16
+
36
(xβ4)2+(yβ9)2=5
(
x
β
4
)
2
+
(
y
β
9
)
2
=
5
(x2β4x+4)+(y2β6y+9)=β8+13
(
x
2
β
4
x
+
4
)
+
(
y
2
β
6
y
+
9
)
=
β
8
+
13
x2+y2β4xβ6y=β16
x
2
+
y
2
β
4
x
β
6
y
=
β
16
(xβ2)2+(yβ3)2=5
Answers: 3
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The equation 2x2+2y2β8xβ12y+16=0 2 x 2 + 2 y 2 β 8 x β 12 y + 16 = 0 defines a circle. Which of thes...
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