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Simplifying d2 + -28d = 0 Reorder the terms: -28d + d2 = 0 Solving -28d + d2 = 0 Solving for variable 'd'. Factor out the Greatest Common Factor (GCF), 'd'. d(-28 + d) = 0Subproblem 1
Set the factor 'd' equal to zero and attempt to solve: Simplifying d = 0 Solving d = 0 Move all terms containing d to the left, all other terms to the right. Simplifying d = 0Subproblem 2
Set the factor '(-28 + d)' equal to zero and attempt to solve: Simplifying -28 + d = 0 Solving -28 + d = 0 Move all terms containing d to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 28 + d = 0 + 28 Combine like terms: -28 + 28 = 0 0 + d = 0 + 28 d = 0 + 28 Combine like terms: 0 + 28 = 28 d = 28 Simplifying d = 28Solution
d = {0, 28}
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