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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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NEED ASAP AND FULLY EXPLAINED!
egoroff_w [7]

Answer:

B

Step-by-step explanation:

A.) If you plug in 5 for t, you'd get -5 squared + 10(5) - 16

Which would equal 25 + 50 - 16 = 59

Answer a says t is less than 5, so for example let's plug in 4. You'd get a lower number, which means its decreasing. A is wrong

B.) Now let's plug in 8 for t.

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64 + 10(8) - 16 = 144 - 16 = 128

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Sophie [7]
Answer= x³+4x²+16x+64

Expand the following:(x + 4 i) (x - 4 i) (x + 4)
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 | | | | x | + | 4 i
 | | x^2 | + | (4 - 4 i) x | - | 16 i
 | | | | (-16 i) x | + | 64
 | | (4 - 4 i) x^2 | + | (16 + 16 i) x | + | 0
x^3 | + | (4 i) x^2 | + | 0 | + | 0
x^3 | + | 4 x^2 | + | 16 x | + | 64:
Answer: x^3 + 4 x^2 + 16 x + 64
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Answer:

Step-by-step explanation:

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