70k^2-3=4+3k

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Solution for 70k^2-3=4+3k equation:


Simplifying
70k2 + -3 = 4 + 3k

Reorder the terms:
-3 + 70k2 = 4 + 3k

Solving
-3 + 70k2 = 4 + 3k

Solving for variable 'k'.

Reorder the terms:
-3 + -4 + -3k + 70k2 = 4 + 3k + -4 + -3k

Combine like terms: -3 + -4 = -7
-7 + -3k + 70k2 = 4 + 3k + -4 + -3k

Reorder the terms:
-7 + -3k + 70k2 = 4 + -4 + 3k + -3k

Combine like terms: 4 + -4 = 0
-7 + -3k + 70k2 = 0 + 3k + -3k
-7 + -3k + 70k2 = 3k + -3k

Combine like terms: 3k + -3k = 0
-7 + -3k + 70k2 = 0

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

Divide each side by '70'.
-0.1 + -0.04285714286k + k2 = 0

Move the constant term to the right:

Add '0.1' to each side of the equation.
-0.1 + -0.04285714286k + 0.1 + k2 = 0 + 0.1

Reorder the terms:
-0.1 + 0.1 + -0.04285714286k + k2 = 0 + 0.1

Combine like terms: -0.1 + 0.1 = 0.0
0.0 + -0.04285714286k + k2 = 0 + 0.1
-0.04285714286k + k2 = 0 + 0.1

Combine like terms: 0 + 0.1 = 0.1
-0.04285714286k + k2 = 0.1

The k term is -0.04285714286k.  Take half its coefficient (-0.02142857143).
Square it (0.0004591836735) and add it to both sides.

Add '0.0004591836735' to each side of the equation.
-0.04285714286k + 0.0004591836735 + k2 = 0.1 + 0.0004591836735

Reorder the terms:
0.0004591836735 + -0.04285714286k + k2 = 0.1 + 0.0004591836735

Combine like terms: 0.1 + 0.0004591836735 = 0.1004591836735
0.0004591836735 + -0.04285714286k + k2 = 0.1004591836735

Factor a perfect square on the left side:
(k + -0.02142857143)(k + -0.02142857143) = 0.1004591836735

Calculate the square root of the right side: 0.316952968

Break this problem into two subproblems by setting 
(k + -0.02142857143) equal to 0.316952968 and -0.316952968.

Subproblem 1

k + -0.02142857143 = 0.316952968 Simplifying k + -0.02142857143 = 0.316952968 Reorder the terms: -0.02142857143 + k = 0.316952968 Solving -0.02142857143 + k = 0.316952968 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.02142857143' to each side of the equation. -0.02142857143 + 0.02142857143 + k = 0.316952968 + 0.02142857143 Combine like terms: -0.02142857143 + 0.02142857143 = 0.00000000000 0.00000000000 + k = 0.316952968 + 0.02142857143 k = 0.316952968 + 0.02142857143 Combine like terms: 0.316952968 + 0.02142857143 = 0.33838153943 k = 0.33838153943 Simplifying k = 0.33838153943

Subproblem 2

k + -0.02142857143 = -0.316952968 Simplifying k + -0.02142857143 = -0.316952968 Reorder the terms: -0.02142857143 + k = -0.316952968 Solving -0.02142857143 + k = -0.316952968 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.02142857143' to each side of the equation. -0.02142857143 + 0.02142857143 + k = -0.316952968 + 0.02142857143 Combine like terms: -0.02142857143 + 0.02142857143 = 0.00000000000 0.00000000000 + k = -0.316952968 + 0.02142857143 k = -0.316952968 + 0.02142857143 Combine like terms: -0.316952968 + 0.02142857143 = -0.29552439657 k = -0.29552439657 Simplifying k = -0.29552439657

Solution

The solution to the problem is based on the solutions from the subproblems. k = {0.33838153943, -0.29552439657}

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