2x^2+20x+100=49

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Solution for 2x^2+20x+100=49 equation:


Simplifying
2x2 + 20x + 100 = 49

Reorder the terms:
100 + 20x + 2x2 = 49

Solving
100 + 20x + 2x2 = 49

Solving for variable 'x'.

Reorder the terms:
100 + -49 + 20x + 2x2 = 49 + -49

Combine like terms: 100 + -49 = 51
51 + 20x + 2x2 = 49 + -49

Combine like terms: 49 + -49 = 0
51 + 20x + 2x2 = 0

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

Divide each side by '2'.
25.5 + 10x + x2 = 0

Move the constant term to the right:

Add '-25.5' to each side of the equation.
25.5 + 10x + -25.5 + x2 = 0 + -25.5

Reorder the terms:
25.5 + -25.5 + 10x + x2 = 0 + -25.5

Combine like terms: 25.5 + -25.5 = 0.0
0.0 + 10x + x2 = 0 + -25.5
10x + x2 = 0 + -25.5

Combine like terms: 0 + -25.5 = -25.5
10x + x2 = -25.5

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 = -25.5 + 25

Reorder the terms:
25 + 10x + x2 = -25.5 + 25

Combine like terms: -25.5 + 25 = -0.5
25 + 10x + x2 = -0.5

Factor a perfect square on the left side:
(x + 5)(x + 5) = -0.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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