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Ksju [112]
3 years ago
9

Expand and simplify: (2x-3)2

Mathematics
1 answer:
nexus9112 [7]3 years ago
6 0

Answer:

4x-6

Step-by-step explanation:

2(2x) - 2(3)

4x-6

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Answer:

Step-by-step explanation:

circle A is

x²+y²+6x-4y-12=0

x²+6x +y²-4y =12

think (a+b)² = a²+2ab+b² we have a=x, b= 3

and (a-b)² = a²-2ab+b² so we have a=y, b=2

x²+6x +9 +y²-4y+4 = 12-9-4

(x+3)² +(y-2)²= -1

compare to the general equation of a circle (x-h)²+(y-k)² =r²

the center is at (-3,2) and the radius is √-1 =i

Circle B has center (0, -4) and radius 3 so the equation is

(x-0)²+(y-(-4))² =3²

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point (√8, -3) is on the circle if it verifies the equation

√8² +(-3+4)² = 9

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Circle A and circle B are not similar because they do not have the same center and radius

4 0
3 years ago
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Dahasolnce [82]

Answer:

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2 years ago
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asambeis [7]

Answer:

Maybe the Answer is 504

Step-by-step explanation:

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7 0
2 years ago
The temperature in Monarch, Wisconsin, was -3° F at 6:00 a.m. The temperature rose 12 degrees in 9 hours. What was the temperatu
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Answer:

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Step-by-step explanation:

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