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ICE Princess25 [194]

3 years ago

11

The equation x 2 + y 2 − 4 x + 2 y = b x 2 +y 2 −4x+2y=b describes a circle. determine the y coordinate of the center of a circl

e

2 answers:

Gelneren [198K]3 years ago

8 0

Answer:

-1

Step-by-step explanation:

x²+y²-4x+2y=b

x²-4x+4+y²+2y+1=b+4+1

(x-2)²+(y+1)²=b+5

center is (2,-1)

Elan Coil [88]3 years ago

4 0

Answer

Here’s a graph. Hope this helps.

Step-by-step explanation:

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3 years ago

(x+1)^2+(x-1)^2-2x(x+2)=0

antoniya [11.8K]

Answer:

x = 1/2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

$(x+1)^2+(x-1)^2-2x(x+2)=0$
$x^2 + 2x + 1 + x^2 - 2x + 1 -2x^2 -4x = 0$
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Step 2: Subtract 2 from both sides.

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2 years ago