-4.9x^2-48x+160=0

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Solution for -4.9x^2-48x+160=0 equation:


Simplifying
-4.9x2 + -48x + 160 = 0

Reorder the terms:
160 + -48x + -4.9x2 = 0

Solving
160 + -48x + -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'.
-32.65306122 + 9.795918367x + x2 = 0

Move the constant term to the right:

Add '32.65306122' to each side of the equation.
-32.65306122 + 9.795918367x + 32.65306122 + x2 = 0 + 32.65306122

Reorder the terms:
-32.65306122 + 32.65306122 + 9.795918367x + x2 = 0 + 32.65306122

Combine like terms: -32.65306122 + 32.65306122 = 0.00000000
0.00000000 + 9.795918367x + x2 = 0 + 32.65306122
9.795918367x + x2 = 0 + 32.65306122

Combine like terms: 0 + 32.65306122 = 32.65306122
9.795918367x + x2 = 32.65306122

The x term is 9.795918367x.  Take half its coefficient (4.897959184).
Square it (23.99000417) and add it to both sides.

Add '23.99000417' to each side of the equation.
9.795918367x + 23.99000417 + x2 = 32.65306122 + 23.99000417

Reorder the terms:
23.99000417 + 9.795918367x + x2 = 32.65306122 + 23.99000417

Combine like terms: 32.65306122 + 23.99000417 = 56.64306539
23.99000417 + 9.795918367x + x2 = 56.64306539

Factor a perfect square on the left side:
(x + 4.897959184)(x + 4.897959184) = 56.64306539

Calculate the square root of the right side: 7.526158741

Break this problem into two subproblems by setting 
(x + 4.897959184) equal to 7.526158741 and -7.526158741.

Subproblem 1

x + 4.897959184 = 7.526158741 Simplifying x + 4.897959184 = 7.526158741 Reorder the terms: 4.897959184 + x = 7.526158741 Solving 4.897959184 + x = 7.526158741 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.897959184' to each side of the equation. 4.897959184 + -4.897959184 + x = 7.526158741 + -4.897959184 Combine like terms: 4.897959184 + -4.897959184 = 0.000000000 0.000000000 + x = 7.526158741 + -4.897959184 x = 7.526158741 + -4.897959184 Combine like terms: 7.526158741 + -4.897959184 = 2.628199557 x = 2.628199557 Simplifying x = 2.628199557

Subproblem 2

x + 4.897959184 = -7.526158741 Simplifying x + 4.897959184 = -7.526158741 Reorder the terms: 4.897959184 + x = -7.526158741 Solving 4.897959184 + x = -7.526158741 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.897959184' to each side of the equation. 4.897959184 + -4.897959184 + x = -7.526158741 + -4.897959184 Combine like terms: 4.897959184 + -4.897959184 = 0.000000000 0.000000000 + x = -7.526158741 + -4.897959184 x = -7.526158741 + -4.897959184 Combine like terms: -7.526158741 + -4.897959184 = -12.424117925 x = -12.424117925 Simplifying x = -12.424117925

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.628199557, -12.424117925}

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