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Katarina [22]
2 years ago
15

Solve this equation by completing the square p^2 + 16p - 17 = 0

Mathematics
1 answer:
LenaWriter [7]2 years ago
6 0

Answer: p=1

Step-by-step explanation:

p^{2}+16p-17=0\\p^{2}+16p=17\\1^{2}+16(1)=17\\1+16=17\\p=1

(p-1)(p+16)

Also, here's the cross method in completing the square that I tried in the file attachment. I haven't done this in a while, so this may not be neat.

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So you can do 1/2 and then divide it by 1/8.

To divide by a fraction, multiply by its reciprocal.
So;
1/2 / 1/8 = 1/2•8/1

1/2• 8 = 8/2
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7 0
3 years ago
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What is the value of (7 + 2i)(3 - i)?
Harrizon [31]
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Normal variables:
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Imaginary numbers:
Using the result from earlier:
21-i-2i^{2}
Now since i = \sqrt{-1}, then the expression becomes:
21-i-2i^{2}\\21-i-2(\sqrt{-1})^{2}\\21-i+(-2)(-1)\\21-i+2\\\\23-i
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3 years ago
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Masja [62]

Answer:

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6 0
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muminat

Answer:

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