2x^2+19x-4.5=0

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Solution for 2x^2+19x-4.5=0 equation:


Simplifying
2x2 + 19x + -4.5 = 0

Reorder the terms:
-4.5 + 19x + 2x2 = 0

Solving
-4.5 + 19x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-2.25 + 9.5x + x2 = 0

Move the constant term to the right:

Add '2.25' to each side of the equation.
-2.25 + 9.5x + 2.25 + x2 = 0 + 2.25

Reorder the terms:
-2.25 + 2.25 + 9.5x + x2 = 0 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
0.00 + 9.5x + x2 = 0 + 2.25
9.5x + x2 = 0 + 2.25

Combine like terms: 0 + 2.25 = 2.25
9.5x + x2 = 2.25

The x term is 9.5x.  Take half its coefficient (4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
9.5x + 22.5625 + x2 = 2.25 + 22.5625

Reorder the terms:
22.5625 + 9.5x + x2 = 2.25 + 22.5625

Combine like terms: 2.25 + 22.5625 = 24.8125
22.5625 + 9.5x + x2 = 24.8125

Factor a perfect square on the left side:
(x + 4.75)(x + 4.75) = 24.8125

Calculate the square root of the right side: 4.981214711

Break this problem into two subproblems by setting 
(x + 4.75) equal to 4.981214711 and -4.981214711.

Subproblem 1

x + 4.75 = 4.981214711 Simplifying x + 4.75 = 4.981214711 Reorder the terms: 4.75 + x = 4.981214711 Solving 4.75 + x = 4.981214711 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + x = 4.981214711 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = 4.981214711 + -4.75 x = 4.981214711 + -4.75 Combine like terms: 4.981214711 + -4.75 = 0.231214711 x = 0.231214711 Simplifying x = 0.231214711

Subproblem 2

x + 4.75 = -4.981214711 Simplifying x + 4.75 = -4.981214711 Reorder the terms: 4.75 + x = -4.981214711 Solving 4.75 + x = -4.981214711 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + x = -4.981214711 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = -4.981214711 + -4.75 x = -4.981214711 + -4.75 Combine like terms: -4.981214711 + -4.75 = -9.731214711 x = -9.731214711 Simplifying x = -9.731214711

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.231214711, -9.731214711}

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