-4.9x^2+24.5x+9.5=0

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Solution for -4.9x^2+24.5x+9.5=0 equation:


Simplifying
-4.9x2 + 24.5x + 9.5 = 0

Reorder the terms:
9.5 + 24.5x + -4.9x2 = 0

Solving
9.5 + 24.5x + -4.9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4.9 the coefficient of the squared term: 

Divide each side by '-4.9'.
-1.93877551 + -5x + x2 = 0

Move the constant term to the right:

Add '1.93877551' to each side of the equation.
-1.93877551 + -5x + 1.93877551 + x2 = 0 + 1.93877551

Reorder the terms:
-1.93877551 + 1.93877551 + -5x + x2 = 0 + 1.93877551

Combine like terms: -1.93877551 + 1.93877551 = 0.00000000
0.00000000 + -5x + x2 = 0 + 1.93877551
-5x + x2 = 0 + 1.93877551

Combine like terms: 0 + 1.93877551 = 1.93877551
-5x + x2 = 1.93877551

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 = 1.93877551 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 1.93877551 + 6.25

Combine like terms: 1.93877551 + 6.25 = 8.18877551
6.25 + -5x + x2 = 8.18877551

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 8.18877551

Calculate the square root of the right side: 2.861603661

Break this problem into two subproblems by setting 
(x + -2.5) equal to 2.861603661 and -2.861603661.

Subproblem 1

x + -2.5 = 2.861603661 Simplifying x + -2.5 = 2.861603661 Reorder the terms: -2.5 + x = 2.861603661 Solving -2.5 + x = 2.861603661 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 = 2.861603661 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.861603661 + 2.5 x = 2.861603661 + 2.5 Combine like terms: 2.861603661 + 2.5 = 5.361603661 x = 5.361603661 Simplifying x = 5.361603661

Subproblem 2

x + -2.5 = -2.861603661 Simplifying x + -2.5 = -2.861603661 Reorder the terms: -2.5 + x = -2.861603661 Solving -2.5 + x = -2.861603661 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 = -2.861603661 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.861603661 + 2.5 x = -2.861603661 + 2.5 Combine like terms: -2.861603661 + 2.5 = -0.361603661 x = -0.361603661 Simplifying x = -0.361603661

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.361603661, -0.361603661}

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