(a^2+b^2-ab) (a^2-b^2+ab)
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Answer:
We know that,
The difference of two like terms is a like term whose coefficient is the difference of the numerical coefficient of the two like terms.
∴The required difference =(a
2
+b
2
+2ab)−(a
2
+b
2
−2ab)
=a
2
+b
2
+2ab−a
2
−b
2
+2ab
Rearranging and collecting like terms
=(1−1)a
2
+(1−1)b
2
+(2+2)ab
=(0)a
2
+(0)b
2
+(4)ab
=4ab
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