25*x^2=-11x+17

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Solution for 25*x^2=-11x+17 equation:


Simplifying
25x2 = -11x + 17

Reorder the terms:
25x2 = 17 + -11x

Solving
25x2 = 17 + -11x

Solving for variable 'x'.

Reorder the terms:
-17 + 11x + 25x2 = 17 + -11x + -17 + 11x

Reorder the terms:
-17 + 11x + 25x2 = 17 + -17 + -11x + 11x

Combine like terms: 17 + -17 = 0
-17 + 11x + 25x2 = 0 + -11x + 11x
-17 + 11x + 25x2 = -11x + 11x

Combine like terms: -11x + 11x = 0
-17 + 11x + 25x2 = 0

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

Divide each side by '25'.
-0.68 + 0.44x + x2 = 0

Move the constant term to the right:

Add '0.68' to each side of the equation.
-0.68 + 0.44x + 0.68 + x2 = 0 + 0.68

Reorder the terms:
-0.68 + 0.68 + 0.44x + x2 = 0 + 0.68

Combine like terms: -0.68 + 0.68 = 0.00
0.00 + 0.44x + x2 = 0 + 0.68
0.44x + x2 = 0 + 0.68

Combine like terms: 0 + 0.68 = 0.68
0.44x + x2 = 0.68

The x term is 0.44x.  Take half its coefficient (0.22).
Square it (0.0484) and add it to both sides.

Add '0.0484' to each side of the equation.
0.44x + 0.0484 + x2 = 0.68 + 0.0484

Reorder the terms:
0.0484 + 0.44x + x2 = 0.68 + 0.0484

Combine like terms: 0.68 + 0.0484 = 0.7284
0.0484 + 0.44x + x2 = 0.7284

Factor a perfect square on the left side:
(x + 0.22)(x + 0.22) = 0.7284

Calculate the square root of the right side: 0.853463532

Break this problem into two subproblems by setting 
(x + 0.22) equal to 0.853463532 and -0.853463532.

Subproblem 1

x + 0.22 = 0.853463532 Simplifying x + 0.22 = 0.853463532 Reorder the terms: 0.22 + x = 0.853463532 Solving 0.22 + x = 0.853463532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.22' to each side of the equation. 0.22 + -0.22 + x = 0.853463532 + -0.22 Combine like terms: 0.22 + -0.22 = 0.00 0.00 + x = 0.853463532 + -0.22 x = 0.853463532 + -0.22 Combine like terms: 0.853463532 + -0.22 = 0.633463532 x = 0.633463532 Simplifying x = 0.633463532

Subproblem 2

x + 0.22 = -0.853463532 Simplifying x + 0.22 = -0.853463532 Reorder the terms: 0.22 + x = -0.853463532 Solving 0.22 + x = -0.853463532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.22' to each side of the equation. 0.22 + -0.22 + x = -0.853463532 + -0.22 Combine like terms: 0.22 + -0.22 = 0.00 0.00 + x = -0.853463532 + -0.22 x = -0.853463532 + -0.22 Combine like terms: -0.853463532 + -0.22 = -1.073463532 x = -1.073463532 Simplifying x = -1.073463532

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.633463532, -1.073463532}

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