Yahoo Finance Board - Decision Point

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📰 Thus, the value is $ oxed{133} $.Question: How many lattice points lie on the hyperbola $ x^2 - y^2 = 2025 $? 📰 Solution: The equation $ x^2 - y^2 = 2025 $ factors as $ (x - y)(x + y) = 2025 $. Since $ x $ and $ y $ are integers, both $ x - y $ and $ x + y $ must be integers. Let $ a = x - y $ and $ b = x + y $, so $ ab = 2025 $. Then $ x = rac{a + b}{2} $ and $ y = rac{b - a}{2} $. For $ x $ and $ y $ to be integers, $ a + b $ and $ b - a $ must both be even, meaning $ a $ and $ b $ must have the same parity. Since $ 2025 = 3^4 \cdot 5^2 $, it has $ (4+1)(2+1) = 15 $ positive divisors. Each pair $ (a, b) $ such that $ ab = 2025 $ gives a solution, but only those with $ a $ and $ b $ of the same parity are valid. Since 2025 is odd, all its divisors are odd, so $ a $ and $ b $ are both odd, ensuring $ x $ and $ y $ are integers. Each positive divisor pair $ (a, b) $ with $ a \leq b $ gives a unique solution, and since 2025 is a perfect square, there is one square root pair. There are 15 positive divisors, so 15 such factorizations, but only those with $ a \leq b $ are distinct under sign and order. Considering both positive and negative factor pairs, each valid $ (a,b) $ with $ a 📰 e b $ contributes 4 lattice points (due to sign combinations), and symmetric pairs contribute similarly. But since $ a $ and $ b $ must both be odd (always true), and $ ab = 2025 $, we count all ordered pairs $ (a,b) $ with $ ab = 2025 $. There are 15 positive divisors, so 15 positive factor pairs $ (a,b) $, and 15 negative ones $ (-a,-b) $. Each gives integer $ x, y $. So total 30 pairs. Each pair yields a unique lattice point. Thus, there are $ oxed{30} $ lattice points on the hyperbola. 📰 Orlando To Miami 1945044 📰 Washington Nationals Vs Dodgers Match Player Stats 4402352 📰 Yellow Gown 2994132 📰 5Lbs To Oz 3233504 📰 Hidden Clues In Your Cpu Display Reveal Shocking Truths 3147603 📰 Ga Tech Game Today 3957781 📰 Angle Supplementary To 70 Degrees 180 70 110 Degrees 1963453 📰 Mycalpoly 3858808 📰 Saraswati Goddess 7408673 📰 Hhs Communications Breakthrough This Shocking Update Will Change How We Communicate 5777734 📰 This Pearl Snap Shirt Changed Everythingno One Saw It Coming 1326254 📰 Predator Poachers 3902926 📰 Vlc Video Player App 7020665 📰 Dows Market 4276480 📰 The Shocking Truth Usd Twd Exploded Past 500Are You Ready To Join The Moonshot 8402125