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Simplifying (-8x2 + 8x) + -1(9x2 + 12x + -4) = z Reorder the terms: (8x + -8x2) + -1(9x2 + 12x + -4) = z Remove parenthesis around (8x + -8x2) 8x + -8x2 + -1(9x2 + 12x + -4) = z Reorder the terms: 8x + -8x2 + -1(-4 + 12x + 9x2) = z 8x + -8x2 + (-4 * -1 + 12x * -1 + 9x2 * -1) = z 8x + -8x2 + (4 + -12x + -9x2) = z Reorder the terms: 4 + 8x + -12x + -8x2 + -9x2 = z Combine like terms: 8x + -12x = -4x 4 + -4x + -8x2 + -9x2 = z Combine like terms: -8x2 + -9x2 = -17x2 4 + -4x + -17x2 = z Solving 4 + -4x + -17x2 = z Solving for variable 'x'. Combine like terms: z + -1z = 0 4 + -4x + -17x2 + -1z = 0 The solution to this equation could not be determined.
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