find the middle term of (x+2y)^7
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2
Answer:
The narrow sphere on the earth which sustain life is called biosphere
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Answer:
Simplify the expression.
x
7
+
14
x
6
y
+
84
x
5
y
2
+
280
x
4
y
3
+
560
x
3
y
4
+
672
x
2
y
5
+
448
x
y
6
+
128
y
7
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