(899)^2 evaluate by using identity
this question answer is 808201 but I want steps
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Step-by-step explanation:
ANSWER
Using the identity (a−b)
2
=a
2
+b
2
−2ab
8.9
2
=(9−0.1)
2
=9
2
+0.1
2
−2×9×0.1
=81+0.01−1.8
=79.21