evalute by using identities 4.9²-1.12
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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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