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Mathematics
Mathematics
Problem
Consider the following expressions: (i)
x
2
+
3
x
+
1
x^2 + 3x + 1
x
2
+
3
x
+
1
(ii)
5
x
−
4
5x - 4
5
x
−
4
(iii)
7
−
2
x
3
+
x
7 - 2x^3 + x
7
−
2
x
3
+
x
(iv)
6
x
2
−
9
6x^2 - 9
6
x
2
−
9
How many of the above are trinomials of degree
2
2
2
? a)
2
2
2
b)
1
1
1
c)
0
0
0
d)
3
3
3
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