25x^2-6x+9=49

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Solution for 25x^2-6x+9=49 equation:


Simplifying
25x2 + -6x + 9 = 49

Reorder the terms:
9 + -6x + 25x2 = 49

Solving
9 + -6x + 25x2 = 49

Solving for variable 'x'.

Reorder the terms:
9 + -49 + -6x + 25x2 = 49 + -49

Combine like terms: 9 + -49 = -40
-40 + -6x + 25x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-40 + -6x + 25x2 = 0

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

Divide each side by '25'.
-1.6 + -0.24x + x2 = 0

Move the constant term to the right:

Add '1.6' to each side of the equation.
-1.6 + -0.24x + 1.6 + x2 = 0 + 1.6

Reorder the terms:
-1.6 + 1.6 + -0.24x + x2 = 0 + 1.6

Combine like terms: -1.6 + 1.6 = 0.0
0.0 + -0.24x + x2 = 0 + 1.6
-0.24x + x2 = 0 + 1.6

Combine like terms: 0 + 1.6 = 1.6
-0.24x + x2 = 1.6

The x term is -0.24x.  Take half its coefficient (-0.12).
Square it (0.0144) and add it to both sides.

Add '0.0144' to each side of the equation.
-0.24x + 0.0144 + x2 = 1.6 + 0.0144

Reorder the terms:
0.0144 + -0.24x + x2 = 1.6 + 0.0144

Combine like terms: 1.6 + 0.0144 = 1.6144
0.0144 + -0.24x + x2 = 1.6144

Factor a perfect square on the left side:
(x + -0.12)(x + -0.12) = 1.6144

Calculate the square root of the right side: 1.270590414

Break this problem into two subproblems by setting 
(x + -0.12) equal to 1.270590414 and -1.270590414.

Subproblem 1

x + -0.12 = 1.270590414 Simplifying x + -0.12 = 1.270590414 Reorder the terms: -0.12 + x = 1.270590414 Solving -0.12 + x = 1.270590414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.12' to each side of the equation. -0.12 + 0.12 + x = 1.270590414 + 0.12 Combine like terms: -0.12 + 0.12 = 0.00 0.00 + x = 1.270590414 + 0.12 x = 1.270590414 + 0.12 Combine like terms: 1.270590414 + 0.12 = 1.390590414 x = 1.390590414 Simplifying x = 1.390590414

Subproblem 2

x + -0.12 = -1.270590414 Simplifying x + -0.12 = -1.270590414 Reorder the terms: -0.12 + x = -1.270590414 Solving -0.12 + x = -1.270590414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.12' to each side of the equation. -0.12 + 0.12 + x = -1.270590414 + 0.12 Combine like terms: -0.12 + 0.12 = 0.00 0.00 + x = -1.270590414 + 0.12 x = -1.270590414 + 0.12 Combine like terms: -1.270590414 + 0.12 = -1.150590414 x = -1.150590414 Simplifying x = -1.150590414

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.390590414, -1.150590414}

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