jika (1/a) + (1/b) = 7 dan (1/a) - (1/b) = 3, maka nilai (1/a)² - (1/b)² =...
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Pertanyaan
jika (1/a) + (1/b) = 7 dan (1/a) - (1/b) = 3, maka nilai (1/a)² - (1/b)² =...
1 Jawaban
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1. Jawaban Lau111
(1/a) kuadrat - (1/b) kuadrat = (1/a + 1/b) ( 1/a - 1/b)
= 7 x 3
= 21