Expand and Solve:** \( 250 + 50x + 20x + 4x^2 = 400 \) → \( 4x^2 + 70x + 250 - 400 = 0 \) → \( 4x^2 + 70x - 150 = 0 \)

Thu, 30 Apr 2026 02:22:01 +0000

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