34=-16x^2+80x+5

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Solution for 34=-16x^2+80x+5 equation:


Simplifying
34 = -16x2 + 80x + 5

Reorder the terms:
34 = 5 + 80x + -16x2

Solving
34 = 5 + 80x + -16x2

Solving for variable 'x'.

Combine like terms: 34 + -5 = 29
29 + -80x + 16x2 = 5 + 80x + -16x2 + -5 + -80x + 16x2

Reorder the terms:
29 + -80x + 16x2 = 5 + -5 + 80x + -80x + -16x2 + 16x2

Combine like terms: 5 + -5 = 0
29 + -80x + 16x2 = 0 + 80x + -80x + -16x2 + 16x2
29 + -80x + 16x2 = 80x + -80x + -16x2 + 16x2

Combine like terms: 80x + -80x = 0
29 + -80x + 16x2 = 0 + -16x2 + 16x2
29 + -80x + 16x2 = -16x2 + 16x2

Combine like terms: -16x2 + 16x2 = 0
29 + -80x + 16x2 = 0

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

Divide each side by '16'.
1.8125 + -5x + x2 = 0

Move the constant term to the right:

Add '-1.8125' to each side of the equation.
1.8125 + -5x + -1.8125 + x2 = 0 + -1.8125

Reorder the terms:
1.8125 + -1.8125 + -5x + x2 = 0 + -1.8125

Combine like terms: 1.8125 + -1.8125 = 0.0000
0.0000 + -5x + x2 = 0 + -1.8125
-5x + x2 = 0 + -1.8125

Combine like terms: 0 + -1.8125 = -1.8125
-5x + x2 = -1.8125

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = -1.8125 + 6.25

Reorder the terms:
6.25 + -5x + x2 = -1.8125 + 6.25

Combine like terms: -1.8125 + 6.25 = 4.4375
6.25 + -5x + x2 = 4.4375

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 4.4375

Calculate the square root of the right side: 2.106537443

Break this problem into two subproblems by setting 
(x + -2.5) equal to 2.106537443 and -2.106537443.

Subproblem 1

x + -2.5 = 2.106537443 Simplifying x + -2.5 = 2.106537443 Reorder the terms: -2.5 + x = 2.106537443 Solving -2.5 + x = 2.106537443 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 2.106537443 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.106537443 + 2.5 x = 2.106537443 + 2.5 Combine like terms: 2.106537443 + 2.5 = 4.606537443 x = 4.606537443 Simplifying x = 4.606537443

Subproblem 2

x + -2.5 = -2.106537443 Simplifying x + -2.5 = -2.106537443 Reorder the terms: -2.5 + x = -2.106537443 Solving -2.5 + x = -2.106537443 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -2.106537443 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.106537443 + 2.5 x = -2.106537443 + 2.5 Combine like terms: -2.106537443 + 2.5 = 0.393462557 x = 0.393462557 Simplifying x = 0.393462557

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.606537443, 0.393462557}

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