Which of the following circles lie completely in the fourth quadrant
1 answer:
Answer:
C.(x-5)²+(x+5)=9
D (x-9)²+(y+9)²=16
Step-by-step explanation:
Use a graph tool to visualize the circle.See attached
You can also see that in the options
C. circle has center (5,-5) and radius 3 which will form in 4th quadrant
D. Circle has center (9,-9) and radius 4 which will still form in 4th quadrant
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Let's expand the products they are all in the form
For the first one we have a=x and b=2i:
For the second one we have a=x-2 and b=2i:
For the third one we have a=x+1 and b=i: