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2 votes
Evaluate using factors:(7.62)² - (2.38)²​?

2 Answers

4 votes

Answer:

52.4

Explanation:

a²-b² = (a-b)(a+b)

Similarly,

(7.62)²-(2.38)²

= (7.62-2.38)(7.62+2.38)

= (5.24)(10)

= 52.4

User Dube
by
5.4k points
6 votes

Answer:

52.4.

Explanation:

This is the difference of 2 squares:

a^2 - b^2 = (a - b)(a + b)

(7.62^2 - (2.38)^2

= (7.62 - 2.38)(7.62 + 2.38)

= 5.24 * 10

= 52.4

User Seraphym
by
4.9k points