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kirill [66]
3 years ago
14

What number must be added to the polynomial to complete the square? x^2 + 7x

Mathematics
1 answer:
Virty [35]3 years ago
7 0
It could be: (x + 7/2)^2 = x^2 + 7x + 49/4
So you should add it by 49/4.
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Answer:

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Step-by-step explanation:

First, lets put the numbers in order from greatest to least.

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Second, let's find the median without number 1. (The median is in bold.)

10 9 9 8 6 4 4

Third, let's add the number 1.

10 9 9 8 6 4 4 1

Fourth, let's find the median with the number 1.

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Since there are two numbers in the middle let's find the average between them.

8+6=14

14/2= 7

Last, let's compare the two medians.

8>7

So when you add the number 1 the median decreases. So your answer is B decrease

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