X^2-8X+3=10

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Solution for X^2-8X+3=10 equation:


Simplifying
X2 + -8X + 3 = 10

Reorder the terms:
3 + -8X + X2 = 10

Solving
3 + -8X + X2 = 10

Solving for variable 'X'.

Reorder the terms:
3 + -10 + -8X + X2 = 10 + -10

Combine like terms: 3 + -10 = -7
-7 + -8X + X2 = 10 + -10

Combine like terms: 10 + -10 = 0
-7 + -8X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -8X + 7 + X2 = 0 + 7

Reorder the terms:
-7 + 7 + -8X + X2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -8X + X2 = 0 + 7
-8X + X2 = 0 + 7

Combine like terms: 0 + 7 = 7
-8X + X2 = 7

The X term is -8X.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8X + 16 + X2 = 7 + 16

Reorder the terms:
16 + -8X + X2 = 7 + 16

Combine like terms: 7 + 16 = 23
16 + -8X + X2 = 23

Factor a perfect square on the left side:
(X + -4)(X + -4) = 23

Calculate the square root of the right side: 4.795831523

Break this problem into two subproblems by setting 
(X + -4) equal to 4.795831523 and -4.795831523.

Subproblem 1

X + -4 = 4.795831523 Simplifying X + -4 = 4.795831523 Reorder the terms: -4 + X = 4.795831523 Solving -4 + X = 4.795831523 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + X = 4.795831523 + 4 Combine like terms: -4 + 4 = 0 0 + X = 4.795831523 + 4 X = 4.795831523 + 4 Combine like terms: 4.795831523 + 4 = 8.795831523 X = 8.795831523 Simplifying X = 8.795831523

Subproblem 2

X + -4 = -4.795831523 Simplifying X + -4 = -4.795831523 Reorder the terms: -4 + X = -4.795831523 Solving -4 + X = -4.795831523 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + X = -4.795831523 + 4 Combine like terms: -4 + 4 = 0 0 + X = -4.795831523 + 4 X = -4.795831523 + 4 Combine like terms: -4.795831523 + 4 = -0.795831523 X = -0.795831523 Simplifying X = -0.795831523

Solution

The solution to the problem is based on the solutions from the subproblems. X = {8.795831523, -0.795831523}

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