August 2018 1 14 Report
Polecenie : wykonaj działania korzystając ze wzoru skróconego mnożenia.

1. (a-3b)(a+3b) =

2. (½m +n²)(½m - n²) =

3. (x²y + 2xy²)(x²y – 2xy²) =

4. (√21 - √20)(√21+√20) =

5. (½x - y²)² =
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