-4k^2+37k-75=1

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Solution for -4k^2+37k-75=1 equation:


Simplifying
-4k2 + 37k + -75 = 1

Reorder the terms:
-75 + 37k + -4k2 = 1

Solving
-75 + 37k + -4k2 = 1

Solving for variable 'k'.

Reorder the terms:
-75 + -1 + 37k + -4k2 = 1 + -1

Combine like terms: -75 + -1 = -76
-76 + 37k + -4k2 = 1 + -1

Combine like terms: 1 + -1 = 0
-76 + 37k + -4k2 = 0

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

Divide each side by '-4'.
19 + -9.25k + k2 = 0

Move the constant term to the right:

Add '-19' to each side of the equation.
19 + -9.25k + -19 + k2 = 0 + -19

Reorder the terms:
19 + -19 + -9.25k + k2 = 0 + -19

Combine like terms: 19 + -19 = 0
0 + -9.25k + k2 = 0 + -19
-9.25k + k2 = 0 + -19

Combine like terms: 0 + -19 = -19
-9.25k + k2 = -19

The k term is -9.25k.  Take half its coefficient (-4.625).
Square it (21.390625) and add it to both sides.

Add '21.390625' to each side of the equation.
-9.25k + 21.390625 + k2 = -19 + 21.390625

Reorder the terms:
21.390625 + -9.25k + k2 = -19 + 21.390625

Combine like terms: -19 + 21.390625 = 2.390625
21.390625 + -9.25k + k2 = 2.390625

Factor a perfect square on the left side:
(k + -4.625)(k + -4.625) = 2.390625

Calculate the square root of the right side: 1.54616461

Break this problem into two subproblems by setting 
(k + -4.625) equal to 1.54616461 and -1.54616461.

Subproblem 1

k + -4.625 = 1.54616461 Simplifying k + -4.625 = 1.54616461 Reorder the terms: -4.625 + k = 1.54616461 Solving -4.625 + k = 1.54616461 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '4.625' to each side of the equation. -4.625 + 4.625 + k = 1.54616461 + 4.625 Combine like terms: -4.625 + 4.625 = 0.000 0.000 + k = 1.54616461 + 4.625 k = 1.54616461 + 4.625 Combine like terms: 1.54616461 + 4.625 = 6.17116461 k = 6.17116461 Simplifying k = 6.17116461

Subproblem 2

k + -4.625 = -1.54616461 Simplifying k + -4.625 = -1.54616461 Reorder the terms: -4.625 + k = -1.54616461 Solving -4.625 + k = -1.54616461 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '4.625' to each side of the equation. -4.625 + 4.625 + k = -1.54616461 + 4.625 Combine like terms: -4.625 + 4.625 = 0.000 0.000 + k = -1.54616461 + 4.625 k = -1.54616461 + 4.625 Combine like terms: -1.54616461 + 4.625 = 3.07883539 k = 3.07883539 Simplifying k = 3.07883539

Solution

The solution to the problem is based on the solutions from the subproblems. k = {6.17116461, 3.07883539}

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