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b = 3x - 4
c = 5x - 3
a² +b² = c²
(4x-1)² +(3x-4)² = (5x -3)²
16x²-8x -1 +9x² - 24x + 16 = 25x² - 30x + 9
25x² - 32x + 15 = 25x² -30x + 9
-2x = - 6
x = 3
luas segitiga = 1/2 (a b) = 1/2 (4x-1)(3x-4)
L = 1/2 (11)(5)= 27,5