10d^2=17d-20

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Solution for 10d^2=17d-20 equation:


Simplifying
10d2 = 17d + -20

Reorder the terms:
10d2 = -20 + 17d

Solving
10d2 = -20 + 17d

Solving for variable 'd'.

Reorder the terms:
20 + -17d + 10d2 = -20 + 17d + 20 + -17d

Reorder the terms:
20 + -17d + 10d2 = -20 + 20 + 17d + -17d

Combine like terms: -20 + 20 = 0
20 + -17d + 10d2 = 0 + 17d + -17d
20 + -17d + 10d2 = 17d + -17d

Combine like terms: 17d + -17d = 0
20 + -17d + 10d2 = 0

Begin completing the square.  Divide all terms by
10 the coefficient of the squared term: 

Divide each side by '10'.
2 + -1.7d + d2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -1.7d + -2 + d2 = 0 + -2

Reorder the terms:
2 + -2 + -1.7d + d2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1.7d + d2 = 0 + -2
-1.7d + d2 = 0 + -2

Combine like terms: 0 + -2 = -2
-1.7d + d2 = -2

The d term is -1.7d.  Take half its coefficient (-0.85).
Square it (0.7225) and add it to both sides.

Add '0.7225' to each side of the equation.
-1.7d + 0.7225 + d2 = -2 + 0.7225

Reorder the terms:
0.7225 + -1.7d + d2 = -2 + 0.7225

Combine like terms: -2 + 0.7225 = -1.2775
0.7225 + -1.7d + d2 = -1.2775

Factor a perfect square on the left side:
(d + -0.85)(d + -0.85) = -1.2775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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