10x^2+21=3x-17

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Solution for 10x^2+21=3x-17 equation:


Simplifying
10x2 + 21 = 3x + -17

Reorder the terms:
21 + 10x2 = 3x + -17

Reorder the terms:
21 + 10x2 = -17 + 3x

Solving
21 + 10x2 = -17 + 3x

Solving for variable 'x'.

Reorder the terms:
21 + 17 + -3x + 10x2 = -17 + 3x + 17 + -3x

Combine like terms: 21 + 17 = 38
38 + -3x + 10x2 = -17 + 3x + 17 + -3x

Reorder the terms:
38 + -3x + 10x2 = -17 + 17 + 3x + -3x

Combine like terms: -17 + 17 = 0
38 + -3x + 10x2 = 0 + 3x + -3x
38 + -3x + 10x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
38 + -3x + 10x2 = 0

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

Divide each side by '10'.
3.8 + -0.3x + x2 = 0

Move the constant term to the right:

Add '-3.8' to each side of the equation.
3.8 + -0.3x + -3.8 + x2 = 0 + -3.8

Reorder the terms:
3.8 + -3.8 + -0.3x + x2 = 0 + -3.8

Combine like terms: 3.8 + -3.8 = 0.0
0.0 + -0.3x + x2 = 0 + -3.8
-0.3x + x2 = 0 + -3.8

Combine like terms: 0 + -3.8 = -3.8
-0.3x + x2 = -3.8

The x term is -0.3x.  Take half its coefficient (-0.15).
Square it (0.0225) and add it to both sides.

Add '0.0225' to each side of the equation.
-0.3x + 0.0225 + x2 = -3.8 + 0.0225

Reorder the terms:
0.0225 + -0.3x + x2 = -3.8 + 0.0225

Combine like terms: -3.8 + 0.0225 = -3.7775
0.0225 + -0.3x + x2 = -3.7775

Factor a perfect square on the left side:
(x + -0.15)(x + -0.15) = -3.7775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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