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Mathematics
Problem
Which of the following expressions is a binomial? a)
4
x
4
−
3
x
−
1
4x^4 - 3x^{-1}
4
x
4
−
3
x
−
1
b)
x
2
+
x
+
1
x^2 + x + 1
x
2
+
x
+
1
c)
3
x
2
+
2
x
3x^2 + 2x
3
x
2
+
2
x
d)
x
2
x^2
x
2
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