10x^2+5x+18=1

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Solution for 10x^2+5x+18=1 equation:


Simplifying
10x2 + 5x + 18 = 1

Reorder the terms:
18 + 5x + 10x2 = 1

Solving
18 + 5x + 10x2 = 1

Solving for variable 'x'.

Reorder the terms:
18 + -1 + 5x + 10x2 = 1 + -1

Combine like terms: 18 + -1 = 17
17 + 5x + 10x2 = 1 + -1

Combine like terms: 1 + -1 = 0
17 + 5x + 10x2 = 0

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

Divide each side by '10'.
1.7 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-1.7' to each side of the equation.
1.7 + 0.5x + -1.7 + x2 = 0 + -1.7

Reorder the terms:
1.7 + -1.7 + 0.5x + x2 = 0 + -1.7

Combine like terms: 1.7 + -1.7 = 0.0
0.0 + 0.5x + x2 = 0 + -1.7
0.5x + x2 = 0 + -1.7

Combine like terms: 0 + -1.7 = -1.7
0.5x + x2 = -1.7

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = -1.7 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -1.7 + 0.0625

Combine like terms: -1.7 + 0.0625 = -1.6375
0.0625 + 0.5x + x2 = -1.6375

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = -1.6375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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