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AysviL [449]
3 years ago
13

(4 + 12i) + (16 - 8i)

Mathematics
2 answers:
densk [106]3 years ago
8 0

Answer:

Answer is 20+4i

Step-by-step explanation:

I hope it's helpful!

Andrei [34K]3 years ago
8 0

Answer:

20 + 4i

Step-by-step explanation:

[remove brackets]

(4+12i) + (16-8i) --> 4+12i+16-8i

[collect like terms]

4 + 16= 20

12i - 8i= 4i

20 + 4i

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consider the function f(x) = x2 2x – 15. what are the x-intercepts of the function? left-most x-intercept: ( , 0) right-most x-i
eimsori [14]

we have

f(x)=x^{2} +2x-15

we know that

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so

in this problem

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Group terms that contain the same variable, and move the constant to the opposite side of the equation

x^{2} +2x=15

Complete the square. Remember to balance the equation by adding the same constants to each side

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Rewrite as perfect squares

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<u>the answer is</u>

the x-intercepts are the points (3,0) and (-5,0)

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