-4.9x^2+19.6x=-24.5

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Solution for -4.9x^2+19.6x=-24.5 equation:


Simplifying
-4.9x2 + 19.6x = -24.5

Reorder the terms:
19.6x + -4.9x2 = -24.5

Solving
19.6x + -4.9x2 = -24.5

Solving for variable 'x'.

Reorder the terms:
24.5 + 19.6x + -4.9x2 = -24.5 + 24.5

Combine like terms: -24.5 + 24.5 = 0.0
24.5 + 19.6x + -4.9x2 = 0.0

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

Divide each side by '-4.9'.
-5 + -4x + x2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -4x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + -4x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -4x + x2 = 0 + 5
-4x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
-4x + x2 = 5

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 5 + 4

Reorder the terms:
4 + -4x + x2 = 5 + 4

Combine like terms: 5 + 4 = 9
4 + -4x + x2 = 9

Factor a perfect square on the left side:
(x + -2)(x + -2) = 9

Calculate the square root of the right side: 3

Break this problem into two subproblems by setting 
(x + -2) equal to 3 and -3.

Subproblem 1

x + -2 = 3 Simplifying x + -2 = 3 Reorder the terms: -2 + x = 3 Solving -2 + x = 3 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 3 + 2 Combine like terms: -2 + 2 = 0 0 + x = 3 + 2 x = 3 + 2 Combine like terms: 3 + 2 = 5 x = 5 Simplifying x = 5

Subproblem 2

x + -2 = -3 Simplifying x + -2 = -3 Reorder the terms: -2 + x = -3 Solving -2 + x = -3 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -3 + 2 Combine like terms: -2 + 2 = 0 0 + x = -3 + 2 x = -3 + 2 Combine like terms: -3 + 2 = -1 x = -1 Simplifying x = -1

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5, -1}

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