What is the relation between 7 and à ?
Answer the questions 5 & 6 based on the data
Given data 2, 2, 2, 3,3,3,4,4,4,5,5,5
the mean of the data.
is multiplied to the every observation in the
Answer all the questions
Write the formula for mode and explain the
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1
Answer:
Given : 4a
2
−ab
2
+4a+1
We can write it as
4a
2
−ab
2
+4a+1=(4a
2
+4a+1)−4b
2
We get,
4a
2
−ab
2
+4a+1=[(2a)
2
+2×2a×1+1
2
]−(2b)
2
On further calculation
4a
2
−ab
2
+4a+1=(2a+1)
2
−(2b)
2
Based on the equation a
2
−b
2
=(a+b)(a−b)
Using the formula
4a
2
−ab
2
+4a+1 =(2a+1+2b)(2a+1−2b)
So we get
4a
2
−ab
2
+4a+1=(2a+2b+1)(2a−2b+1)
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