4x^2-3x=17

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Solution for 4x^2-3x=17 equation:


Simplifying
4x2 + -3x = 17

Reorder the terms:
-3x + 4x2 = 17

Solving
-3x + 4x2 = 17

Solving for variable 'x'.

Reorder the terms:
-17 + -3x + 4x2 = 17 + -17

Combine like terms: 17 + -17 = 0
-17 + -3x + 4x2 = 0

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

Divide each side by '4'.
-4.25 + -0.75x + x2 = 0

Move the constant term to the right:

Add '4.25' to each side of the equation.
-4.25 + -0.75x + 4.25 + x2 = 0 + 4.25

Reorder the terms:
-4.25 + 4.25 + -0.75x + x2 = 0 + 4.25

Combine like terms: -4.25 + 4.25 = 0.00
0.00 + -0.75x + x2 = 0 + 4.25
-0.75x + x2 = 0 + 4.25

Combine like terms: 0 + 4.25 = 4.25
-0.75x + x2 = 4.25

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = 4.25 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = 4.25 + 0.140625

Combine like terms: 4.25 + 0.140625 = 4.390625
0.140625 + -0.75x + x2 = 4.390625

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = 4.390625

Calculate the square root of the right side: 2.095381827

Break this problem into two subproblems by setting 
(x + -0.375) equal to 2.095381827 and -2.095381827.

Subproblem 1

x + -0.375 = 2.095381827 Simplifying x + -0.375 = 2.095381827 Reorder the terms: -0.375 + x = 2.095381827 Solving -0.375 + x = 2.095381827 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 2.095381827 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 2.095381827 + 0.375 x = 2.095381827 + 0.375 Combine like terms: 2.095381827 + 0.375 = 2.470381827 x = 2.470381827 Simplifying x = 2.470381827

Subproblem 2

x + -0.375 = -2.095381827 Simplifying x + -0.375 = -2.095381827 Reorder the terms: -0.375 + x = -2.095381827 Solving -0.375 + x = -2.095381827 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -2.095381827 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -2.095381827 + 0.375 x = -2.095381827 + 0.375 Combine like terms: -2.095381827 + 0.375 = -1.720381827 x = -1.720381827 Simplifying x = -1.720381827

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.470381827, -1.720381827}

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