x^2+3x+42.25=19

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Solution for x^2+3x+42.25=19 equation:


Simplifying
x2 + 3x + 42.25 = 19

Reorder the terms:
42.25 + 3x + x2 = 19

Solving
42.25 + 3x + x2 = 19

Solving for variable 'x'.

Reorder the terms:
42.25 + -19 + 3x + x2 = 19 + -19

Combine like terms: 42.25 + -19 = 23.25
23.25 + 3x + x2 = 19 + -19

Combine like terms: 19 + -19 = 0
23.25 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-23.25' to each side of the equation.
23.25 + 3x + -23.25 + x2 = 0 + -23.25

Reorder the terms:
23.25 + -23.25 + 3x + x2 = 0 + -23.25

Combine like terms: 23.25 + -23.25 = 0.00
0.00 + 3x + x2 = 0 + -23.25
3x + x2 = 0 + -23.25

Combine like terms: 0 + -23.25 = -23.25
3x + x2 = -23.25

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = -23.25 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -23.25 + 2.25

Combine like terms: -23.25 + 2.25 = -21
2.25 + 3x + x2 = -21

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = -21

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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