1 year ago

A-b.a+b= giúp mình nhé

Mathematics

1 answer:

lilavasa [31]1 year ago

3 0

Step-by-step explanation:

Did you mean:

= (a - b)(a + b)

= a.a + b.a - b.a - b.b

= a² + ba - ba - b²

= a² - b²

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