-4.905x^2+19x-10=0

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Solution for -4.905x^2+19x-10=0 equation:


Simplifying
-4.905x2 + 19x + -10 = 0

Reorder the terms:
-10 + 19x + -4.905x2 = 0

Solving
-10 + 19x + -4.905x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4.905 the coefficient of the squared term: 

Divide each side by '-4.905'.
2.038735984 + -3.873598369x + x2 = 0

Move the constant term to the right:

Add '-2.038735984' to each side of the equation.
2.038735984 + -3.873598369x + -2.038735984 + x2 = 0 + -2.038735984

Reorder the terms:
2.038735984 + -2.038735984 + -3.873598369x + x2 = 0 + -2.038735984

Combine like terms: 2.038735984 + -2.038735984 = 0.000000000
0.000000000 + -3.873598369x + x2 = 0 + -2.038735984
-3.873598369x + x2 = 0 + -2.038735984

Combine like terms: 0 + -2.038735984 = -2.038735984
-3.873598369x + x2 = -2.038735984

The x term is -3.873598369x.  Take half its coefficient (-1.936799185).
Square it (3.751191083) and add it to both sides.

Add '3.751191083' to each side of the equation.
-3.873598369x + 3.751191083 + x2 = -2.038735984 + 3.751191083

Reorder the terms:
3.751191083 + -3.873598369x + x2 = -2.038735984 + 3.751191083

Combine like terms: -2.038735984 + 3.751191083 = 1.712455099
3.751191083 + -3.873598369x + x2 = 1.712455099

Factor a perfect square on the left side:
(x + -1.936799185)(x + -1.936799185) = 1.712455099

Calculate the square root of the right side: 1.308608077

Break this problem into two subproblems by setting 
(x + -1.936799185) equal to 1.308608077 and -1.308608077.

Subproblem 1

x + -1.936799185 = 1.308608077 Simplifying x + -1.936799185 = 1.308608077 Reorder the terms: -1.936799185 + x = 1.308608077 Solving -1.936799185 + x = 1.308608077 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.936799185' to each side of the equation. -1.936799185 + 1.936799185 + x = 1.308608077 + 1.936799185 Combine like terms: -1.936799185 + 1.936799185 = 0.000000000 0.000000000 + x = 1.308608077 + 1.936799185 x = 1.308608077 + 1.936799185 Combine like terms: 1.308608077 + 1.936799185 = 3.245407262 x = 3.245407262 Simplifying x = 3.245407262

Subproblem 2

x + -1.936799185 = -1.308608077 Simplifying x + -1.936799185 = -1.308608077 Reorder the terms: -1.936799185 + x = -1.308608077 Solving -1.936799185 + x = -1.308608077 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.936799185' to each side of the equation. -1.936799185 + 1.936799185 + x = -1.308608077 + 1.936799185 Combine like terms: -1.936799185 + 1.936799185 = 0.000000000 0.000000000 + x = -1.308608077 + 1.936799185 x = -1.308608077 + 1.936799185 Combine like terms: -1.308608077 + 1.936799185 = 0.628191108 x = 0.628191108 Simplifying x = 0.628191108

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.245407262, 0.628191108}

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