X^2+X-10=-7X+5

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Solution for X^2+X-10=-7X+5 equation:


Simplifying
X2 + X + -10 = -7X + 5

Reorder the terms:
-10 + X + X2 = -7X + 5

Reorder the terms:
-10 + X + X2 = 5 + -7X

Solving
-10 + X + X2 = 5 + -7X

Solving for variable 'X'.

Reorder the terms:
-10 + -5 + X + 7X + X2 = 5 + -7X + -5 + 7X

Combine like terms: -10 + -5 = -15
-15 + X + 7X + X2 = 5 + -7X + -5 + 7X

Combine like terms: X + 7X = 8X
-15 + 8X + X2 = 5 + -7X + -5 + 7X

Reorder the terms:
-15 + 8X + X2 = 5 + -5 + -7X + 7X

Combine like terms: 5 + -5 = 0
-15 + 8X + X2 = 0 + -7X + 7X
-15 + 8X + X2 = -7X + 7X

Combine like terms: -7X + 7X = 0
-15 + 8X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '15' to each side of the equation.
-15 + 8X + 15 + X2 = 0 + 15

Reorder the terms:
-15 + 15 + 8X + X2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 8X + X2 = 0 + 15
8X + X2 = 0 + 15

Combine like terms: 0 + 15 = 15
8X + X2 = 15

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 = 15 + 16

Reorder the terms:
16 + 8X + X2 = 15 + 16

Combine like terms: 15 + 16 = 31
16 + 8X + X2 = 31

Factor a perfect square on the left side:
(X + 4)(X + 4) = 31

Calculate the square root of the right side: 5.567764363

Break this problem into two subproblems by setting 
(X + 4) equal to 5.567764363 and -5.567764363.

Subproblem 1

X + 4 = 5.567764363 Simplifying X + 4 = 5.567764363 Reorder the terms: 4 + X = 5.567764363 Solving 4 + X = 5.567764363 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 = 5.567764363 + -4 Combine like terms: 4 + -4 = 0 0 + X = 5.567764363 + -4 X = 5.567764363 + -4 Combine like terms: 5.567764363 + -4 = 1.567764363 X = 1.567764363 Simplifying X = 1.567764363

Subproblem 2

X + 4 = -5.567764363 Simplifying X + 4 = -5.567764363 Reorder the terms: 4 + X = -5.567764363 Solving 4 + X = -5.567764363 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 = -5.567764363 + -4 Combine like terms: 4 + -4 = 0 0 + X = -5.567764363 + -4 X = -5.567764363 + -4 Combine like terms: -5.567764363 + -4 = -9.567764363 X = -9.567764363 Simplifying X = -9.567764363

Solution

The solution to the problem is based on the solutions from the subproblems. X = {1.567764363, -9.567764363}

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