1.

Evalute by using identities 4.9²-1.12​

Answer»

Answer:

22.8

Step-by-step EXPLANATION:

IDENTITY » a² - b² = (a+b)(a-b)

(4.9)² - (1.1)²

= (4.9+1.1) (4.9-1.1)

= (6) (3.8)

= 22.8



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