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Simplifying (5x2 + -4x + -1)(7x2 + 9x + 8) = 0 Reorder the terms: (-1 + -4x + 5x2)(7x2 + 9x + 8) = 0 Reorder the terms: (-1 + -4x + 5x2)(8 + 9x + 7x2) = 0 Multiply (-1 + -4x + 5x2) * (8 + 9x + 7x2) (-1(8 + 9x + 7x2) + -4x * (8 + 9x + 7x2) + 5x2 * (8 + 9x + 7x2)) = 0 ((8 * -1 + 9x * -1 + 7x2 * -1) + -4x * (8 + 9x + 7x2) + 5x2 * (8 + 9x + 7x2)) = 0 ((-8 + -9x + -7x2) + -4x * (8 + 9x + 7x2) + 5x2 * (8 + 9x + 7x2)) = 0 (-8 + -9x + -7x2 + (8 * -4x + 9x * -4x + 7x2 * -4x) + 5x2 * (8 + 9x + 7x2)) = 0 (-8 + -9x + -7x2 + (-32x + -36x2 + -28x3) + 5x2 * (8 + 9x + 7x2)) = 0 (-8 + -9x + -7x2 + -32x + -36x2 + -28x3 + (8 * 5x2 + 9x * 5x2 + 7x2 * 5x2)) = 0 (-8 + -9x + -7x2 + -32x + -36x2 + -28x3 + (40x2 + 45x3 + 35x4)) = 0 Reorder the terms: (-8 + -9x + -32x + -7x2 + -36x2 + 40x2 + -28x3 + 45x3 + 35x4) = 0 Combine like terms: -9x + -32x = -41x (-8 + -41x + -7x2 + -36x2 + 40x2 + -28x3 + 45x3 + 35x4) = 0 Combine like terms: -7x2 + -36x2 = -43x2 (-8 + -41x + -43x2 + 40x2 + -28x3 + 45x3 + 35x4) = 0 Combine like terms: -43x2 + 40x2 = -3x2 (-8 + -41x + -3x2 + -28x3 + 45x3 + 35x4) = 0 Combine like terms: -28x3 + 45x3 = 17x3 (-8 + -41x + -3x2 + 17x3 + 35x4) = 0 Solving -8 + -41x + -3x2 + 17x3 + 35x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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