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Yuri [45]
3 years ago
9

Explain why the polynomial 144x2 − 200x + 81 is not a perfect square.

Mathematics
1 answer:
Sloan [31]3 years ago
5 0
The square root of 144x^2 = 12 x
and square root of + 81 = 9 or -9

if  this polynomial were a perfect square then its factors would be 
(12x - 9)(12x - 9)

but its not a perfect squre because (12x - 9)(12x - 9)  = 144x^2 - 216x + 81.
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Three of the thirty computers are out of service (not working). What percent are working?
AveGali [126]

Answer:

Percentage of computers working equals:

90%

Step-by-step explanation:

Three of the thirty computers are out of service.

Number of computers working=30-3=27

Total computers=30

Percentage of working computers=

                                                       =  

                                                       = 90%

Hence, Percentage of computers working is:

90%

3 0
3 years ago
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shtirl [24]
Isn’t it?
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Answer:

Step-by-step explanation:

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