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3 years ago

(1+2i) (2+5i)

Mathematics

1 answer:

Lostsunrise [7]3 years ago

5 0

Answer:

Step-by-step explanation:

first multiply 1 with 2+5i then multiply 2i with 2+5i and you will get

2+5i+4i+10i^2

then in the next step add 4i and 5i you will get 9i

in the next step put i^2=-1 and you will get -10

in the last step just substract 2-10 you will get -8 and 9i

and your answer will be -8+9i

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Identify the equation of the circle that has its center at (16, 30) and passes through the origin

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To solve this question, we have to find the equation of the circle with given center and where it passes. Doing this, we get that the equation of the circle is:

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$(x - x_0)^2 + (y - y_0)^2 = r^2$

Center at (16, 30)

This means that $x_0 = 16, y_0 = 30$

Thus

$(x - 16)^2 + (y - 30)^2 = r^2$

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We use this to find the radius squared, as this means that $x = 0, y = 0$ is part of the circle. Thus

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Thus, the equation of the circle is:

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For another example to find the equation of a circle, you can look at brainly.com/question/23719612

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