h^2-8h+31=62

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Solution for h^2-8h+31=62 equation:


Simplifying
h2 + -8h + 31 = 62

Reorder the terms:
31 + -8h + h2 = 62

Solving
31 + -8h + h2 = 62

Solving for variable 'h'.

Reorder the terms:
31 + -62 + -8h + h2 = 62 + -62

Combine like terms: 31 + -62 = -31
-31 + -8h + h2 = 62 + -62

Combine like terms: 62 + -62 = 0
-31 + -8h + h2 = 0

Begin completing the square.

Move the constant term to the right:

Add '31' to each side of the equation.
-31 + -8h + 31 + h2 = 0 + 31

Reorder the terms:
-31 + 31 + -8h + h2 = 0 + 31

Combine like terms: -31 + 31 = 0
0 + -8h + h2 = 0 + 31
-8h + h2 = 0 + 31

Combine like terms: 0 + 31 = 31
-8h + h2 = 31

The h term is -8h.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8h + 16 + h2 = 31 + 16

Reorder the terms:
16 + -8h + h2 = 31 + 16

Combine like terms: 31 + 16 = 47
16 + -8h + h2 = 47

Factor a perfect square on the left side:
(h + -4)(h + -4) = 47

Calculate the square root of the right side: 6.8556546

Break this problem into two subproblems by setting 
(h + -4) equal to 6.8556546 and -6.8556546.

Subproblem 1

h + -4 = 6.8556546 Simplifying h + -4 = 6.8556546 Reorder the terms: -4 + h = 6.8556546 Solving -4 + h = 6.8556546 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + h = 6.8556546 + 4 Combine like terms: -4 + 4 = 0 0 + h = 6.8556546 + 4 h = 6.8556546 + 4 Combine like terms: 6.8556546 + 4 = 10.8556546 h = 10.8556546 Simplifying h = 10.8556546

Subproblem 2

h + -4 = -6.8556546 Simplifying h + -4 = -6.8556546 Reorder the terms: -4 + h = -6.8556546 Solving -4 + h = -6.8556546 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + h = -6.8556546 + 4 Combine like terms: -4 + 4 = 0 0 + h = -6.8556546 + 4 h = -6.8556546 + 4 Combine like terms: -6.8556546 + 4 = -2.8556546 h = -2.8556546 Simplifying h = -2.8556546

Solution

The solution to the problem is based on the solutions from the subproblems. h = {10.8556546, -2.8556546}

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