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4 years ago

Find the difference (6+3i)-(-7-4i)

Mathematics

1 answer:

tekilochka [14]4 years ago

4 0

Answer:

13 + 7i

Step-by-step explanation:

We have given complex number

The difference of given complex number is:

(6 + 3i) - ( -7- 4i) = {6 - (- 7)} + {3 -( - 4)}i

⇒ 13 + 7i

Since the difference of two complex number (a + ib) and (c + id) is:

(a - c) + i(b - d)

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1 year ago

Which are the solutions of the quadratic equation? x2 = 9x + 6

Lelechka [254]

X^2 = 9x + 6
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8 0

4 years ago

Read 2 more answers

Please help. I know it’s not the hardest, but I think I did something wrong when I solved it. Please include your work. Tysm! Pl

Alex73 [517]

1 Multiply both sides by

−

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−

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(

−

3.2

)

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(

−

3.2

)

9(n−3.2)

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3 Multiply both sides by

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4 Expand.

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−

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−

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6 Simplify

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−

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−

28.8

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−

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0.6=7n−28.8

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29.4

29.4.

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11 Switch sides.

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3 years ago

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3 years ago