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`and`(AB = sqrt(`+`(`^`(30, 2), `^`(50, 2), `*`(`+`(`*`(50, `*`(`*`(2, 30)))), `/`(1, 2)))), `and`(sqrt(`+`(`^`(30, 2), `^`(50, 2), `*`(`+`(`*`(50, `*`(`*`(2, 30)))), `/`(1, 2)))) = `+`(`*`(10, `*`(sq...