zapisz w postaci iloczynu (skorzystaj ze wzoru skruconego mnożenia) 25a ^2-16b^2
a² - b² = (a - b)(a +b)
25a² - 16b² = (5a)² - (4b)² = (5a - 4b)(5a + 4b)
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a² - b² = (a - b)(a +b)
25a² - 16b² = (5a)² - (4b)² = (5a - 4b)(5a + 4b)