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Simplifying r2 + -2rd + d2 = 0 Reorder the terms: -2dr + d2 + r2 = 0 Solving -2dr + d2 + r2 = 0 Solving for variable 'd'. Factor a trinomial. (d + -1r)(d + -1r) = 0Subproblem 1
Set the factor '(d + -1r)' equal to zero and attempt to solve: Simplifying d + -1r = 0 Solving d + -1r = 0 Move all terms containing d to the left, all other terms to the right. Add 'r' to each side of the equation. d + -1r + r = 0 + r Combine like terms: -1r + r = 0 d + 0 = 0 + r d = 0 + r Remove the zero: d = r Simplifying d = rSubproblem 2
Set the factor '(d + -1r)' equal to zero and attempt to solve: Simplifying d + -1r = 0 Solving d + -1r = 0 Move all terms containing d to the left, all other terms to the right. Add 'r' to each side of the equation. d + -1r + r = 0 + r Combine like terms: -1r + r = 0 d + 0 = 0 + r d = 0 + r Remove the zero: d = r Simplifying d = rSolution
d = {r, r}
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