8x^2-45x+62=0

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Solution for 8x^2-45x+62=0 equation:


Simplifying
8x2 + -45x + 62 = 0

Reorder the terms:
62 + -45x + 8x2 = 0

Solving
62 + -45x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
7.75 + -5.625x + x2 = 0

Move the constant term to the right:

Add '-7.75' to each side of the equation.
7.75 + -5.625x + -7.75 + x2 = 0 + -7.75

Reorder the terms:
7.75 + -7.75 + -5.625x + x2 = 0 + -7.75

Combine like terms: 7.75 + -7.75 = 0.00
0.00 + -5.625x + x2 = 0 + -7.75
-5.625x + x2 = 0 + -7.75

Combine like terms: 0 + -7.75 = -7.75
-5.625x + x2 = -7.75

The x term is -5.625x.  Take half its coefficient (-2.8125).
Square it (7.91015625) and add it to both sides.

Add '7.91015625' to each side of the equation.
-5.625x + 7.91015625 + x2 = -7.75 + 7.91015625

Reorder the terms:
7.91015625 + -5.625x + x2 = -7.75 + 7.91015625

Combine like terms: -7.75 + 7.91015625 = 0.16015625
7.91015625 + -5.625x + x2 = 0.16015625

Factor a perfect square on the left side:
(x + -2.8125)(x + -2.8125) = 0.16015625

Calculate the square root of the right side: 0.400195265

Break this problem into two subproblems by setting 
(x + -2.8125) equal to 0.400195265 and -0.400195265.

Subproblem 1

x + -2.8125 = 0.400195265 Simplifying x + -2.8125 = 0.400195265 Reorder the terms: -2.8125 + x = 0.400195265 Solving -2.8125 + x = 0.400195265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.8125' to each side of the equation. -2.8125 + 2.8125 + x = 0.400195265 + 2.8125 Combine like terms: -2.8125 + 2.8125 = 0.0000 0.0000 + x = 0.400195265 + 2.8125 x = 0.400195265 + 2.8125 Combine like terms: 0.400195265 + 2.8125 = 3.212695265 x = 3.212695265 Simplifying x = 3.212695265

Subproblem 2

x + -2.8125 = -0.400195265 Simplifying x + -2.8125 = -0.400195265 Reorder the terms: -2.8125 + x = -0.400195265 Solving -2.8125 + x = -0.400195265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.8125' to each side of the equation. -2.8125 + 2.8125 + x = -0.400195265 + 2.8125 Combine like terms: -2.8125 + 2.8125 = 0.0000 0.0000 + x = -0.400195265 + 2.8125 x = -0.400195265 + 2.8125 Combine like terms: -0.400195265 + 2.8125 = 2.412304735 x = 2.412304735 Simplifying x = 2.412304735

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.212695265, 2.412304735}

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