=0.42x^2-3.2x+48

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Solution for =0.42x^2-3.2x+48 equation:


Simplifying
0 = 0.42x2 + -3.2x + 48

Reorder the terms:
0 = 48 + -3.2x + 0.42x2

Solving
0 = 48 + -3.2x + 0.42x2

Solving for variable 'x'.

Combine like terms: 0 + -48 = -48
-48 + 3.2x + -0.42x2 = 48 + -3.2x + 0.42x2 + -48 + 3.2x + -0.42x2

Reorder the terms:
-48 + 3.2x + -0.42x2 = 48 + -48 + -3.2x + 3.2x + 0.42x2 + -0.42x2

Combine like terms: 48 + -48 = 0
-48 + 3.2x + -0.42x2 = 0 + -3.2x + 3.2x + 0.42x2 + -0.42x2
-48 + 3.2x + -0.42x2 = -3.2x + 3.2x + 0.42x2 + -0.42x2

Combine like terms: -3.2x + 3.2x = 0.0
-48 + 3.2x + -0.42x2 = 0.0 + 0.42x2 + -0.42x2
-48 + 3.2x + -0.42x2 = 0.42x2 + -0.42x2

Combine like terms: 0.42x2 + -0.42x2 = 0.00
-48 + 3.2x + -0.42x2 = 0.00

Begin completing the square.  Divide all terms by
-0.42 the coefficient of the squared term: 

Divide each side by '-0.42'.
114.2857143 + -7.619047619x + x2 = 0

Move the constant term to the right:

Add '-114.2857143' to each side of the equation.
114.2857143 + -7.619047619x + -114.2857143 + x2 = 0 + -114.2857143

Reorder the terms:
114.2857143 + -114.2857143 + -7.619047619x + x2 = 0 + -114.2857143

Combine like terms: 114.2857143 + -114.2857143 = 0.0000000
0.0000000 + -7.619047619x + x2 = 0 + -114.2857143
-7.619047619x + x2 = 0 + -114.2857143

Combine like terms: 0 + -114.2857143 = -114.2857143
-7.619047619x + x2 = -114.2857143

The x term is -7.619047619x.  Take half its coefficient (-3.80952381).
Square it (14.51247166) and add it to both sides.

Add '14.51247166' to each side of the equation.
-7.619047619x + 14.51247166 + x2 = -114.2857143 + 14.51247166

Reorder the terms:
14.51247166 + -7.619047619x + x2 = -114.2857143 + 14.51247166

Combine like terms: -114.2857143 + 14.51247166 = -99.77324264
14.51247166 + -7.619047619x + x2 = -99.77324264

Factor a perfect square on the left side:
(x + -3.80952381)(x + -3.80952381) = -99.77324264

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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