4d^2-16d+3=

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Solution for 4d^2-16d+3= equation:


Simplifying
4d2 + -16d + 3 = 0

Reorder the terms:
3 + -16d + 4d2 = 0

Solving
3 + -16d + 4d2 = 0

Solving for variable 'd'.

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

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

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + -4d + -0.75 + d2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + -4d + d2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + -4d + d2 = 0 + -0.75
-4d + d2 = 0 + -0.75

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

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 = -0.75 + 4

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

Combine like terms: -0.75 + 4 = 3.25
4 + -4d + d2 = 3.25

Factor a perfect square on the left side:
(d + -2)(d + -2) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(d + -2) equal to 1.802775638 and -1.802775638.

Subproblem 1

d + -2 = 1.802775638 Simplifying d + -2 = 1.802775638 Reorder the terms: -2 + d = 1.802775638 Solving -2 + d = 1.802775638 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + d = 1.802775638 + 2 Combine like terms: -2 + 2 = 0 0 + d = 1.802775638 + 2 d = 1.802775638 + 2 Combine like terms: 1.802775638 + 2 = 3.802775638 d = 3.802775638 Simplifying d = 3.802775638

Subproblem 2

d + -2 = -1.802775638 Simplifying d + -2 = -1.802775638 Reorder the terms: -2 + d = -1.802775638 Solving -2 + d = -1.802775638 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + d = -1.802775638 + 2 Combine like terms: -2 + 2 = 0 0 + d = -1.802775638 + 2 d = -1.802775638 + 2 Combine like terms: -1.802775638 + 2 = 0.197224362 d = 0.197224362 Simplifying d = 0.197224362

Solution

The solution to the problem is based on the solutions from the subproblems. d = {3.802775638, 0.197224362}

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