4+x(7x+5)=

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Solution for 4+x(7x+5)= equation:


Simplifying
4 + x(7x + 5) = 0

Reorder the terms:
4 + x(5 + 7x) = 0
4 + (5 * x + 7x * x) = 0
4 + (5x + 7x2) = 0

Solving
4 + 5x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
0.5714285714 + 0.7142857143x + x2 = 0

Move the constant term to the right:

Add '-0.5714285714' to each side of the equation.
0.5714285714 + 0.7142857143x + -0.5714285714 + x2 = 0 + -0.5714285714

Reorder the terms:
0.5714285714 + -0.5714285714 + 0.7142857143x + x2 = 0 + -0.5714285714

Combine like terms: 0.5714285714 + -0.5714285714 = 0.0000000000
0.0000000000 + 0.7142857143x + x2 = 0 + -0.5714285714
0.7142857143x + x2 = 0 + -0.5714285714

Combine like terms: 0 + -0.5714285714 = -0.5714285714
0.7142857143x + x2 = -0.5714285714

The x term is 0.7142857143x.  Take half its coefficient (0.3571428572).
Square it (0.1275510204) and add it to both sides.

Add '0.1275510204' to each side of the equation.
0.7142857143x + 0.1275510204 + x2 = -0.5714285714 + 0.1275510204

Reorder the terms:
0.1275510204 + 0.7142857143x + x2 = -0.5714285714 + 0.1275510204

Combine like terms: -0.5714285714 + 0.1275510204 = -0.443877551
0.1275510204 + 0.7142857143x + x2 = -0.443877551

Factor a perfect square on the left side:
(x + 0.3571428572)(x + 0.3571428572) = -0.443877551

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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