Zapisz w jak najprostszej postaci :
(a+2)² - (a-2)²
(p-⅓)³ + (p+⅓)²
(a+2b)(2a-b) - 3ab
jak da rade to rozpisac, dzieki :)
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(a+2)² - (a-2)²=a²+4a+4-a²+4a-4=8a
(p-⅓)³ + (p+⅓)²=p²-2/3p+1/9+p²+2/3p+1/9=2p²+2/9
(a+2b)(2a-b) - 3ab=2a²-ab+4ab+b-3ab=2a²+b
(a+2)² - (a-2)²=a²+4a+4-(a²-4a+4)=a²+4a+4-a²+4a-4=8a
(p-⅓)³ + (p+⅓)²=p³-p²+⅓p-¹/₂₇+p²+⅔p+¹/₉=p³-⁴/₃p+²/₂₇
(a+2b)(2a-b) - 3ab=2a²+4ab-ab-2b²-3ab=2a²-2b²