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It is known that the lengths of the two sides of a right triangle are the two roots of the quadratic equation x & # 178; - 7x + 12 = 0, and the third length of the right triangle is obtained
x²-7x+12=0
(x-4)(x-3)=0
x1=4 x2=3
Third side = root (4 ^ 2 + 3 ^ 2) = 5
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