Question: The graph of a quadratic function opens upward and passes through (1, 4). If the vertex is located at (2, -3), find the equation of this quadratic function.
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Question: Simplify (2^3)^4 - 5^2 × 3^3 ÷ (2^2)^4 to the nearest whole number.
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What is the value of x when solving the quadratic equation 2x^2 + 5x - 3 = 0?