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Simplifying (4x3 + -8x2 + 7x) + -1(5x2 + 5x + 7) = 0 Reorder the terms: (7x + -8x2 + 4x3) + -1(5x2 + 5x + 7) = 0 Remove parenthesis around (7x + -8x2 + 4x3) 7x + -8x2 + 4x3 + -1(5x2 + 5x + 7) = 0 Reorder the terms: 7x + -8x2 + 4x3 + -1(7 + 5x + 5x2) = 0 7x + -8x2 + 4x3 + (7 * -1 + 5x * -1 + 5x2 * -1) = 0 7x + -8x2 + 4x3 + (-7 + -5x + -5x2) = 0 Reorder the terms: -7 + 7x + -5x + -8x2 + -5x2 + 4x3 = 0 Combine like terms: 7x + -5x = 2x -7 + 2x + -8x2 + -5x2 + 4x3 = 0 Combine like terms: -8x2 + -5x2 = -13x2 -7 + 2x + -13x2 + 4x3 = 0 Solving -7 + 2x + -13x2 + 4x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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