(X)(X+4)=149

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Solution for (X)(X+4)=149 equation:


Simplifying
(X)(X + 4) = 149

Reorder the terms:
X(4 + X) = 149
(4 * X + X * X) = 149
(4X + X2) = 149

Solving
4X + X2 = 149

Solving for variable 'X'.

Reorder the terms:
-149 + 4X + X2 = 149 + -149

Combine like terms: 149 + -149 = 0
-149 + 4X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '149' to each side of the equation.
-149 + 4X + 149 + X2 = 0 + 149

Reorder the terms:
-149 + 149 + 4X + X2 = 0 + 149

Combine like terms: -149 + 149 = 0
0 + 4X + X2 = 0 + 149
4X + X2 = 0 + 149

Combine like terms: 0 + 149 = 149
4X + X2 = 149

The X term is 4X.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4X + 4 + X2 = 149 + 4

Reorder the terms:
4 + 4X + X2 = 149 + 4

Combine like terms: 149 + 4 = 153
4 + 4X + X2 = 153

Factor a perfect square on the left side:
(X + 2)(X + 2) = 153

Calculate the square root of the right side: 12.369316877

Break this problem into two subproblems by setting 
(X + 2) equal to 12.369316877 and -12.369316877.

Subproblem 1

X + 2 = 12.369316877 Simplifying X + 2 = 12.369316877 Reorder the terms: 2 + X = 12.369316877 Solving 2 + X = 12.369316877 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + X = 12.369316877 + -2 Combine like terms: 2 + -2 = 0 0 + X = 12.369316877 + -2 X = 12.369316877 + -2 Combine like terms: 12.369316877 + -2 = 10.369316877 X = 10.369316877 Simplifying X = 10.369316877

Subproblem 2

X + 2 = -12.369316877 Simplifying X + 2 = -12.369316877 Reorder the terms: 2 + X = -12.369316877 Solving 2 + X = -12.369316877 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + X = -12.369316877 + -2 Combine like terms: 2 + -2 = 0 0 + X = -12.369316877 + -2 X = -12.369316877 + -2 Combine like terms: -12.369316877 + -2 = -14.369316877 X = -14.369316877 Simplifying X = -14.369316877

Solution

The solution to the problem is based on the solutions from the subproblems. X = {10.369316877, -14.369316877}

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