Evaluate using identities 7.5 X 6.5
Answers
Answered by
1
Answer:
(7 +0.5) (7-0.5)
a^2 - b^2 = (a+b) (a-b)
7^2 - 0.5^2
49 - 0.25 = 48.75
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Answered by
0
Answer:
2.4
Step-by-step explanation:
(7.0+0.5)( 7.0-0.5)
this formula is (a+b)(a-b)=a²-b²=(7.0)²-(0.5)²
=4.9-2.5
=2.4
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