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Simplifying Y = -1x2 + 28x + -171 Reorder the terms: Y = -171 + 28x + -1x2 Solving Y = -171 + 28x + -1x2 Solving for variable 'Y'. Move all terms containing Y to the left, all other terms to the right. Simplifying Y = -171 + 28x + -1x2
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