430=0.1x^2+2.4x+25

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Solution for 430=0.1x^2+2.4x+25 equation:


Simplifying
430 = 0.1x2 + 2.4x + 25

Reorder the terms:
430 = 25 + 2.4x + 0.1x2

Solving
430 = 25 + 2.4x + 0.1x2

Solving for variable 'x'.

Combine like terms: 430 + -25 = 405
405 + -2.4x + -0.1x2 = 25 + 2.4x + 0.1x2 + -25 + -2.4x + -0.1x2

Reorder the terms:
405 + -2.4x + -0.1x2 = 25 + -25 + 2.4x + -2.4x + 0.1x2 + -0.1x2

Combine like terms: 25 + -25 = 0
405 + -2.4x + -0.1x2 = 0 + 2.4x + -2.4x + 0.1x2 + -0.1x2
405 + -2.4x + -0.1x2 = 2.4x + -2.4x + 0.1x2 + -0.1x2

Combine like terms: 2.4x + -2.4x = 0.0
405 + -2.4x + -0.1x2 = 0.0 + 0.1x2 + -0.1x2
405 + -2.4x + -0.1x2 = 0.1x2 + -0.1x2

Combine like terms: 0.1x2 + -0.1x2 = 0.0
405 + -2.4x + -0.1x2 = 0.0

Begin completing the square.  Divide all terms by
-0.1 the coefficient of the squared term: 

Divide each side by '-0.1'.
-4050 + 24x + x2 = 0

Move the constant term to the right:

Add '4050' to each side of the equation.
-4050 + 24x + 4050 + x2 = 0 + 4050

Reorder the terms:
-4050 + 4050 + 24x + x2 = 0 + 4050

Combine like terms: -4050 + 4050 = 0
0 + 24x + x2 = 0 + 4050
24x + x2 = 0 + 4050

Combine like terms: 0 + 4050 = 4050
24x + x2 = 4050

The x term is 24x.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24x + 144 + x2 = 4050 + 144

Reorder the terms:
144 + 24x + x2 = 4050 + 144

Combine like terms: 4050 + 144 = 4194
144 + 24x + x2 = 4194

Factor a perfect square on the left side:
(x + 12)(x + 12) = 4194

Calculate the square root of the right side: 64.761099435

Break this problem into two subproblems by setting 
(x + 12) equal to 64.761099435 and -64.761099435.

Subproblem 1

x + 12 = 64.761099435 Simplifying x + 12 = 64.761099435 Reorder the terms: 12 + x = 64.761099435 Solving 12 + x = 64.761099435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 64.761099435 + -12 Combine like terms: 12 + -12 = 0 0 + x = 64.761099435 + -12 x = 64.761099435 + -12 Combine like terms: 64.761099435 + -12 = 52.761099435 x = 52.761099435 Simplifying x = 52.761099435

Subproblem 2

x + 12 = -64.761099435 Simplifying x + 12 = -64.761099435 Reorder the terms: 12 + x = -64.761099435 Solving 12 + x = -64.761099435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -64.761099435 + -12 Combine like terms: 12 + -12 = 0 0 + x = -64.761099435 + -12 x = -64.761099435 + -12 Combine like terms: -64.761099435 + -12 = -76.761099435 x = -76.761099435 Simplifying x = -76.761099435

Solution

The solution to the problem is based on the solutions from the subproblems. x = {52.761099435, -76.761099435}

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