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iren2701 [21]
3 years ago
12

What is the coefficient in the following expression? 5a2-7

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
3 0

Answer:

5

Step-by-step explanation:

coefficeint is the number before the variable

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Sphinxa [80]
Hey there!

This can be written as n^{2}-(7)^{2}

This is in form of \fbox{a^{2}-b^{2}} , it can be expanded as \fbox{(a-b)(a+b)}

=> (n-7)(n+7)=0
=> n -7 = 0 or n + 7 = 0
=> n = 7 or n = -7

So option 7 , -7 are correct.

Hope this is clear :)
Have a good day:)
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