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Simplifying (5x + 3)(2x2 + -1x + -21) = 0 Reorder the terms: (3 + 5x)(2x2 + -1x + -21) = 0 Reorder the terms: (3 + 5x)(-21 + -1x + 2x2) = 0 Multiply (3 + 5x) * (-21 + -1x + 2x2) (3(-21 + -1x + 2x2) + 5x * (-21 + -1x + 2x2)) = 0 ((-21 * 3 + -1x * 3 + 2x2 * 3) + 5x * (-21 + -1x + 2x2)) = 0 ((-63 + -3x + 6x2) + 5x * (-21 + -1x + 2x2)) = 0 (-63 + -3x + 6x2 + (-21 * 5x + -1x * 5x + 2x2 * 5x)) = 0 (-63 + -3x + 6x2 + (-105x + -5x2 + 10x3)) = 0 Reorder the terms: (-63 + -3x + -105x + 6x2 + -5x2 + 10x3) = 0 Combine like terms: -3x + -105x = -108x (-63 + -108x + 6x2 + -5x2 + 10x3) = 0 Combine like terms: 6x2 + -5x2 = 1x2 (-63 + -108x + 1x2 + 10x3) = 0 Solving -63 + -108x + 1x2 + 10x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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