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Nikolay [14]
2 years ago
6

How do you factor b^2-81

Mathematics
1 answer:
Naddik [55]2 years ago
7 0
The middle number is 0 and the last is -81Factoring means we want something like(b+_)(b+_)We need two numbers that add together to get and Multiply to get -81which are 9 and -9:<span><span>9+-9 = 0 and </span><span>9*-9 = -81</span></span>
Fill in the blanks in
(b+_)(b+_)
with 9 and -9 to get...<span><span>(<span>b+9</span>)</span><span>(<span>b−9</span>)</span></span>
The answer is : (b+9)(b−9)
<span>
</span>
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Step-by-step explanation:

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7 0
3 years ago
How do you solve <br> 8|x+2|-6=5|x+2|+3
sergejj [24]

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x = 1 or x = -5

Step-by-step explanation:

Solve for x over the integers:

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x = 1 or x + 2 = -3

Subtract 2 from both sides:

Answer:  x = 1 or x = -5

7 0
3 years ago
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Dmitry [639]

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What is the variance? 84000

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5 stars if this helped  

Step-by-step explanation:

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3 years ago
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