x^2-16x+50=21

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Solution for x^2-16x+50=21 equation:


Simplifying
x2 + -16x + 50 = 21

Reorder the terms:
50 + -16x + x2 = 21

Solving
50 + -16x + x2 = 21

Solving for variable 'x'.

Reorder the terms:
50 + -21 + -16x + x2 = 21 + -21

Combine like terms: 50 + -21 = 29
29 + -16x + x2 = 21 + -21

Combine like terms: 21 + -21 = 0
29 + -16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-29' to each side of the equation.
29 + -16x + -29 + x2 = 0 + -29

Reorder the terms:
29 + -29 + -16x + x2 = 0 + -29

Combine like terms: 29 + -29 = 0
0 + -16x + x2 = 0 + -29
-16x + x2 = 0 + -29

Combine like terms: 0 + -29 = -29
-16x + x2 = -29

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = -29 + 64

Reorder the terms:
64 + -16x + x2 = -29 + 64

Combine like terms: -29 + 64 = 35
64 + -16x + x2 = 35

Factor a perfect square on the left side:
(x + -8)(x + -8) = 35

Calculate the square root of the right side: 5.916079783

Break this problem into two subproblems by setting 
(x + -8) equal to 5.916079783 and -5.916079783.

Subproblem 1

x + -8 = 5.916079783 Simplifying x + -8 = 5.916079783 Reorder the terms: -8 + x = 5.916079783 Solving -8 + x = 5.916079783 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 5.916079783 + 8 Combine like terms: -8 + 8 = 0 0 + x = 5.916079783 + 8 x = 5.916079783 + 8 Combine like terms: 5.916079783 + 8 = 13.916079783 x = 13.916079783 Simplifying x = 13.916079783

Subproblem 2

x + -8 = -5.916079783 Simplifying x + -8 = -5.916079783 Reorder the terms: -8 + x = -5.916079783 Solving -8 + x = -5.916079783 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -5.916079783 + 8 Combine like terms: -8 + 8 = 0 0 + x = -5.916079783 + 8 x = -5.916079783 + 8 Combine like terms: -5.916079783 + 8 = 2.083920217 x = 2.083920217 Simplifying x = 2.083920217

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.916079783, 2.083920217}

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