21x^2-44x+120=

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Solution for 21x^2-44x+120= equation:


Simplifying
21x2 + -44x + 120 = 0

Reorder the terms:
120 + -44x + 21x2 = 0

Solving
120 + -44x + 21x2 = 0

Solving for variable 'x'.

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

Divide each side by '21'.
5.714285714 + -2.095238095x + x2 = 0

Move the constant term to the right:

Add '-5.714285714' to each side of the equation.
5.714285714 + -2.095238095x + -5.714285714 + x2 = 0 + -5.714285714

Reorder the terms:
5.714285714 + -5.714285714 + -2.095238095x + x2 = 0 + -5.714285714

Combine like terms: 5.714285714 + -5.714285714 = 0.000000000
0.000000000 + -2.095238095x + x2 = 0 + -5.714285714
-2.095238095x + x2 = 0 + -5.714285714

Combine like terms: 0 + -5.714285714 = -5.714285714
-2.095238095x + x2 = -5.714285714

The x term is -2.095238095x.  Take half its coefficient (-1.047619048).
Square it (1.097505670) and add it to both sides.

Add '1.097505670' to each side of the equation.
-2.095238095x + 1.097505670 + x2 = -5.714285714 + 1.097505670

Reorder the terms:
1.097505670 + -2.095238095x + x2 = -5.714285714 + 1.097505670

Combine like terms: -5.714285714 + 1.097505670 = -4.616780044
1.097505670 + -2.095238095x + x2 = -4.616780044

Factor a perfect square on the left side:
(x + -1.047619048)(x + -1.047619048) = -4.616780044

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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