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likoan [24]
3 years ago
15

3(4-5i) Simplify the expression with complex numbers

Mathematics
1 answer:
strojnjashka [21]3 years ago
7 0
3(4 -5i)

Multiply out

3*4 - 3*5i

12 -15i

Hope this helps.
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Factor completely and then place the factor. in the proper location on the grid (4x-+3)(-2x-5)
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Yay, love these ones.

First of all, (4x-+3)(-2x-5) is the same as (4x-3)(-2x-5)
So the method for solving these can be remembered by FOIL.
F= Firsts   O= Outsides   I= Insides   L= Lasts

In other words everything is multiplied by everything, for example:
4x * -2x and -3 * -5 <span>is the firsts of the brackets multiplied and last of the brackets mulitplied
</span>
4x * -5 and 3 * -2x is the outsides of the brackets multiplied and the insides of the brackets multiplied
<span>
The SUM of FOIL is then added:</span><span>
</span><em>4x*-2x = -8x^2</em>
<em>-3*-5= 15</em>
<em>4x*-5=-20x</em>
<span><em>3*-2x=-6x</em>
</span><span>-8x^2 -20x -6x + 15 = 0
-8x^2 -26x + 15 = 0

So the factored of (4x-3)(-2x-5) <u /><em>=</em> -8x^2 -26x + 15 = 0

So then you graph that equation on your given grid


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Write the equation of the line that passes through the points (4,1) and (-6,9). Put your answer in fully reduced point-slope for
erastovalidia [21]

Answer:

<u>Find the slope:</u>

  • m = \frac{y2-y1}{x2-x1} = \frac{9 - 1}{-6 - 4} = -\frac{8}{10} = -\frac{4}{5}

<u>Use point-slope form and one of the points:</u>

  • y - y₁ = m(x - x₁)
  • y - 1 = -\frac{4}{5}(x - 4)

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I believe it is four dollars

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3/10 * 4/9 = 12/90 = 2/15

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Answer:

Answer- 0

Step-by-step explanation:

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