0.04x^2+5.8x+4.9=

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Solution for 0.04x^2+5.8x+4.9= equation:


Simplifying
0.04x2 + 5.8x + 4.9 = 0

Reorder the terms:
4.9 + 5.8x + 0.04x2 = 0

Solving
4.9 + 5.8x + 0.04x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.04'.
122.5 + 145x + x2 = 0

Move the constant term to the right:

Add '-122.5' to each side of the equation.
122.5 + 145x + -122.5 + x2 = 0 + -122.5

Reorder the terms:
122.5 + -122.5 + 145x + x2 = 0 + -122.5

Combine like terms: 122.5 + -122.5 = 0.0
0.0 + 145x + x2 = 0 + -122.5
145x + x2 = 0 + -122.5

Combine like terms: 0 + -122.5 = -122.5
145x + x2 = -122.5

The x term is 145x.  Take half its coefficient (72.5).
Square it (5256.25) and add it to both sides.

Add '5256.25' to each side of the equation.
145x + 5256.25 + x2 = -122.5 + 5256.25

Reorder the terms:
5256.25 + 145x + x2 = -122.5 + 5256.25

Combine like terms: -122.5 + 5256.25 = 5133.75
5256.25 + 145x + x2 = 5133.75

Factor a perfect square on the left side:
(x + 72.5)(x + 72.5) = 5133.75

Calculate the square root of the right side: 71.650191905

Break this problem into two subproblems by setting 
(x + 72.5) equal to 71.650191905 and -71.650191905.

Subproblem 1

x + 72.5 = 71.650191905 Simplifying x + 72.5 = 71.650191905 Reorder the terms: 72.5 + x = 71.650191905 Solving 72.5 + x = 71.650191905 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-72.5' to each side of the equation. 72.5 + -72.5 + x = 71.650191905 + -72.5 Combine like terms: 72.5 + -72.5 = 0.0 0.0 + x = 71.650191905 + -72.5 x = 71.650191905 + -72.5 Combine like terms: 71.650191905 + -72.5 = -0.849808095 x = -0.849808095 Simplifying x = -0.849808095

Subproblem 2

x + 72.5 = -71.650191905 Simplifying x + 72.5 = -71.650191905 Reorder the terms: 72.5 + x = -71.650191905 Solving 72.5 + x = -71.650191905 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-72.5' to each side of the equation. 72.5 + -72.5 + x = -71.650191905 + -72.5 Combine like terms: 72.5 + -72.5 = 0.0 0.0 + x = -71.650191905 + -72.5 x = -71.650191905 + -72.5 Combine like terms: -71.650191905 + -72.5 = -144.150191905 x = -144.150191905 Simplifying x = -144.150191905

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.849808095, -144.150191905}

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