0.75d^2-3d=-4

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Solution for 0.75d^2-3d=-4 equation:


Simplifying
0.75d2 + -3d = -4

Reorder the terms:
-3d + 0.75d2 = -4

Solving
-3d + 0.75d2 = -4

Solving for variable 'd'.

Reorder the terms:
4 + -3d + 0.75d2 = -4 + 4

Combine like terms: -4 + 4 = 0
4 + -3d + 0.75d2 = 0

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

Divide each side by '0.75'.
5.333333333 + -4d + d2 = 0

Move the constant term to the right:

Add '-5.333333333' to each side of the equation.
5.333333333 + -4d + -5.333333333 + d2 = 0 + -5.333333333

Reorder the terms:
5.333333333 + -5.333333333 + -4d + d2 = 0 + -5.333333333

Combine like terms: 5.333333333 + -5.333333333 = 0.000000000
0.000000000 + -4d + d2 = 0 + -5.333333333
-4d + d2 = 0 + -5.333333333

Combine like terms: 0 + -5.333333333 = -5.333333333
-4d + d2 = -5.333333333

The d term is -4d.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4d + 4 + d2 = -5.333333333 + 4

Reorder the terms:
4 + -4d + d2 = -5.333333333 + 4

Combine like terms: -5.333333333 + 4 = -1.333333333
4 + -4d + d2 = -1.333333333

Factor a perfect square on the left side:
(d + -2)(d + -2) = -1.333333333

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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