Simplify Using Appropriate Identities (2.5)2-(2.1)2
Answers
Answered by
2
Answer:
\frac{5}{2} = 2\frac{1}{2} = 2.5
2.5
hope my answer helps
Answered by
1
Answer:
a²-b²=(a-b)²
a²-2ab+b²
(2.5)²-2×(2.5×2.1)+(2.1)²
6.25-10.5+4.41
=0.16
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