0=-4.9x^2+49x+1.5

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Solution for 0=-4.9x^2+49x+1.5 equation:


Simplifying
0 = -4.9x2 + 49x + 1.5

Reorder the terms:
0 = 1.5 + 49x + -4.9x2

Solving
0 = 1.5 + 49x + -4.9x2

Solving for variable 'x'.

Combine like terms: 0 + -1.5 = -1.5
-1.5 + -49x + 4.9x2 = 1.5 + 49x + -4.9x2 + -1.5 + -49x + 4.9x2

Reorder the terms:
-1.5 + -49x + 4.9x2 = 1.5 + -1.5 + 49x + -49x + -4.9x2 + 4.9x2

Combine like terms: 1.5 + -1.5 = 0.0
-1.5 + -49x + 4.9x2 = 0.0 + 49x + -49x + -4.9x2 + 4.9x2
-1.5 + -49x + 4.9x2 = 49x + -49x + -4.9x2 + 4.9x2

Combine like terms: 49x + -49x = 0
-1.5 + -49x + 4.9x2 = 0 + -4.9x2 + 4.9x2
-1.5 + -49x + 4.9x2 = -4.9x2 + 4.9x2

Combine like terms: -4.9x2 + 4.9x2 = 0.0
-1.5 + -49x + 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'.
-0.306122449 + -10x + x2 = 0

Move the constant term to the right:

Add '0.306122449' to each side of the equation.
-0.306122449 + -10x + 0.306122449 + x2 = 0 + 0.306122449

Reorder the terms:
-0.306122449 + 0.306122449 + -10x + x2 = 0 + 0.306122449

Combine like terms: -0.306122449 + 0.306122449 = 0.000000000
0.000000000 + -10x + x2 = 0 + 0.306122449
-10x + x2 = 0 + 0.306122449

Combine like terms: 0 + 0.306122449 = 0.306122449
-10x + x2 = 0.306122449

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = 0.306122449 + 25

Reorder the terms:
25 + -10x + x2 = 0.306122449 + 25

Combine like terms: 0.306122449 + 25 = 25.306122449
25 + -10x + x2 = 25.306122449

Factor a perfect square on the left side:
(x + -5)(x + -5) = 25.306122449

Calculate the square root of the right side: 5.030519103

Break this problem into two subproblems by setting 
(x + -5) equal to 5.030519103 and -5.030519103.

Subproblem 1

x + -5 = 5.030519103 Simplifying x + -5 = 5.030519103 Reorder the terms: -5 + x = 5.030519103 Solving -5 + x = 5.030519103 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 5.030519103 + 5 Combine like terms: -5 + 5 = 0 0 + x = 5.030519103 + 5 x = 5.030519103 + 5 Combine like terms: 5.030519103 + 5 = 10.030519103 x = 10.030519103 Simplifying x = 10.030519103

Subproblem 2

x + -5 = -5.030519103 Simplifying x + -5 = -5.030519103 Reorder the terms: -5 + x = -5.030519103 Solving -5 + x = -5.030519103 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -5.030519103 + 5 Combine like terms: -5 + 5 = 0 0 + x = -5.030519103 + 5 x = -5.030519103 + 5 Combine like terms: -5.030519103 + 5 = -0.030519103 x = -0.030519103 Simplifying x = -0.030519103

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.030519103, -0.030519103}

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