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Maths CBSE Live product
Class 8
We Distribute, Yet Things Multiply
Square of the difference of two numbers
4.
TBQ - Find the value of the given square number
Question:
3
m.
Use the identity \((a-b)^2\) to find the values of \(84^2\).
Answer:
We can rewrite \(84^2\) as
i
−
6
i
.
By the identity,
a
−
b
2
=
i
i
−
i
i
i
+
i
i
.
Thus, \(84^2\) \(=\)
.
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