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kamila20394
12.08.2020 •
Mathematics
Given that a is a multiple of 456, find the greatest common divisor of 3a^3+a^2+4a+57 and a.
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Ответ:
57
Step-by-step explanation:
Given: a is a multiple of 456
Let![a = 456 x](/tpl/images/0720/0390/d319b.png)
Then, expression![3a^3+a^2+4a+57 =3(456x)^3+(456x)^2+4(456x)+57](/tpl/images/0720/0390/db2d8.png)
Since 456 = 57 x 8
Then,![3(456x)^3+(456x)^2+4(456x)+57=3(57\times 8x)^3+(57\times 8x)^2+4(57\times 8x)+57](/tpl/images/0720/0390/f8e60.png)
Taking 57 out as common
Now, the greatest common divisor of
and
is 57.
Hence, the greatest common divisor of 3a^3+a^2+4a+57 and a is 57.
Ответ:
I believe the answer is C. 43 hope that I'm right on this