2x^2+35x-5.3=0

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Solution for 2x^2+35x-5.3=0 equation:


Simplifying
2x2 + 35x + -5.3 = 0

Reorder the terms:
-5.3 + 35x + 2x2 = 0

Solving
-5.3 + 35x + 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'.
-2.65 + 17.5x + x2 = 0

Move the constant term to the right:

Add '2.65' to each side of the equation.
-2.65 + 17.5x + 2.65 + x2 = 0 + 2.65

Reorder the terms:
-2.65 + 2.65 + 17.5x + x2 = 0 + 2.65

Combine like terms: -2.65 + 2.65 = 0.00
0.00 + 17.5x + x2 = 0 + 2.65
17.5x + x2 = 0 + 2.65

Combine like terms: 0 + 2.65 = 2.65
17.5x + x2 = 2.65

The x term is 17.5x.  Take half its coefficient (8.75).
Square it (76.5625) and add it to both sides.

Add '76.5625' to each side of the equation.
17.5x + 76.5625 + x2 = 2.65 + 76.5625

Reorder the terms:
76.5625 + 17.5x + x2 = 2.65 + 76.5625

Combine like terms: 2.65 + 76.5625 = 79.2125
76.5625 + 17.5x + x2 = 79.2125

Factor a perfect square on the left side:
(x + 8.75)(x + 8.75) = 79.2125

Calculate the square root of the right side: 8.900140448

Break this problem into two subproblems by setting 
(x + 8.75) equal to 8.900140448 and -8.900140448.

Subproblem 1

x + 8.75 = 8.900140448 Simplifying x + 8.75 = 8.900140448 Reorder the terms: 8.75 + x = 8.900140448 Solving 8.75 + x = 8.900140448 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.75' to each side of the equation. 8.75 + -8.75 + x = 8.900140448 + -8.75 Combine like terms: 8.75 + -8.75 = 0.00 0.00 + x = 8.900140448 + -8.75 x = 8.900140448 + -8.75 Combine like terms: 8.900140448 + -8.75 = 0.150140448 x = 0.150140448 Simplifying x = 0.150140448

Subproblem 2

x + 8.75 = -8.900140448 Simplifying x + 8.75 = -8.900140448 Reorder the terms: 8.75 + x = -8.900140448 Solving 8.75 + x = -8.900140448 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.75' to each side of the equation. 8.75 + -8.75 + x = -8.900140448 + -8.75 Combine like terms: 8.75 + -8.75 = 0.00 0.00 + x = -8.900140448 + -8.75 x = -8.900140448 + -8.75 Combine like terms: -8.900140448 + -8.75 = -17.650140448 x = -17.650140448 Simplifying x = -17.650140448

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.150140448, -17.650140448}

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