d − przekątna kwadratu y2 = (3x)2 + (4x)2 ⇒ y = 5x LBCD = d + 8x = 4x√2 + 8x LABCD = 14x
P = (4x)2 = 144(17 + 12√2) d = 4x√2 = 12(4 + 3√2)
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d − przekątna kwadratu y2 = (3x)2 + (4x)2 ⇒ y = 5x LBCD = d + 8x = 4x√2 + 8x LABCD = 14x
3 4x√2 + 8x + 6 = 14x ⇒ 6 = 6x − 4x√2 ⇒ 3 = x(3 − 2√2) ⇒ x = = 9 + 6√2 3 − 2√2P = (4x)2 = 144(17 + 12√2) d = 4x√2 = 12(4 + 3√2)