d^2-10d+25=9

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Solution for d^2-10d+25=9 equation:


Simplifying
d2 + -10d + 25 = 9

Reorder the terms:
25 + -10d + d2 = 9

Solving
25 + -10d + d2 = 9

Solving for variable 'd'.

Reorder the terms:
25 + -9 + -10d + d2 = 9 + -9

Combine like terms: 25 + -9 = 16
16 + -10d + d2 = 9 + -9

Combine like terms: 9 + -9 = 0
16 + -10d + d2 = 0

Factor a trinomial.
(2 + -1d)(8 + -1d) = 0

Subproblem 1

Set the factor '(2 + -1d)' equal to zero and attempt to solve: Simplifying 2 + -1d = 0 Solving 2 + -1d = 0 Move all terms containing d to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1d = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1d = 0 + -2 -1d = 0 + -2 Combine like terms: 0 + -2 = -2 -1d = -2 Divide each side by '-1'. d = 2 Simplifying d = 2

Subproblem 2

Set the factor '(8 + -1d)' equal to zero and attempt to solve: Simplifying 8 + -1d = 0 Solving 8 + -1d = 0 Move all terms containing d to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1d = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1d = 0 + -8 -1d = 0 + -8 Combine like terms: 0 + -8 = -8 -1d = -8 Divide each side by '-1'. d = 8 Simplifying d = 8

Solution

d = {2, 8}

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