Which of the following equations demonstrate that the set of polynomials is not closed under the certain operations?
1 answer:
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We are technically FOILing this out... with a power of 3.
(x+y)(x+y)(x+y)
So we can first factor out the first two "x+y"s.
, multiplied by the last "x+y".
Coefficients are the number that comes in front of a variable.
In this case, 1 comes in front of
, 3 comes in front of 
, 3 comes in front of 
, and 1 comes in front of 
.
Thus: 1, 3, 3, 1.
Answer Choice A
(x+y)(x+y)(x+y)
So we can first factor out the first two "x+y"s.
Coefficients are the number that comes in front of a variable.
In this case, 1 comes in front of
Thus: 1, 3, 3, 1.
Answer Choice A