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pogonyaev
3 years ago
7

Simplify the expression

alt="\frac{-5+i}{2i}" align="absmiddle" class="latex-formula">. Explain
Mathematics
1 answer:
Fudgin [204]3 years ago
6 0

Answer:

1/2 + 5/2 i

Step-by-step explanation:

(-5+i)         i

---------* --------

2i             i

cannot have i in the denominator so we multiply by i

(-5+i)         i             -5i + i^2

---------* --------  = ----------------

2i             i              +2i^2

remember i^2 = -1

     -5i + -1        -1 -5i

= ---------------- = ------------------

    +2(-1)                        -2

get rid of the negative in the denominator by multiplying the top and bottom by -1

    (-1 -5i) * -1

= ------------------

          -2*(-1)


    (1 +5i)

= ------------------   =   1/2 + 5/2 i

          2

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1.Write this sentence as an equation.Do not solve it.
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Problem 1

x = some unknown number

3x = three times a number

3x-7 = difference of three times a number and seven

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===========================================================

Problem 2

Use the distribution rule to get

3(2x+4)-2x

3*2x+3*4-2x

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===========================================================

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The overall dimensions of the rectangular pool are 36 ft by 18 ft

<h3>Answer:  d = 21</h3>
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3 years ago
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