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Simplifying (x2 + 6x + -7)(x2 + -1x + 4) = 0 Reorder the terms: (-7 + 6x + x2)(x2 + -1x + 4) = 0 Reorder the terms: (-7 + 6x + x2)(4 + -1x + x2) = 0 Multiply (-7 + 6x + x2) * (4 + -1x + x2) (-7(4 + -1x + x2) + 6x * (4 + -1x + x2) + x2(4 + -1x + x2)) = 0 ((4 * -7 + -1x * -7 + x2 * -7) + 6x * (4 + -1x + x2) + x2(4 + -1x + x2)) = 0 ((-28 + 7x + -7x2) + 6x * (4 + -1x + x2) + x2(4 + -1x + x2)) = 0 (-28 + 7x + -7x2 + (4 * 6x + -1x * 6x + x2 * 6x) + x2(4 + -1x + x2)) = 0 (-28 + 7x + -7x2 + (24x + -6x2 + 6x3) + x2(4 + -1x + x2)) = 0 (-28 + 7x + -7x2 + 24x + -6x2 + 6x3 + (4 * x2 + -1x * x2 + x2 * x2)) = 0 (-28 + 7x + -7x2 + 24x + -6x2 + 6x3 + (4x2 + -1x3 + x4)) = 0 Reorder the terms: (-28 + 7x + 24x + -7x2 + -6x2 + 4x2 + 6x3 + -1x3 + x4) = 0 Combine like terms: 7x + 24x = 31x (-28 + 31x + -7x2 + -6x2 + 4x2 + 6x3 + -1x3 + x4) = 0 Combine like terms: -7x2 + -6x2 = -13x2 (-28 + 31x + -13x2 + 4x2 + 6x3 + -1x3 + x4) = 0 Combine like terms: -13x2 + 4x2 = -9x2 (-28 + 31x + -9x2 + 6x3 + -1x3 + x4) = 0 Combine like terms: 6x3 + -1x3 = 5x3 (-28 + 31x + -9x2 + 5x3 + x4) = 0 Solving -28 + 31x + -9x2 + 5x3 + x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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