4x^2+4x+1=30

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Solution for 4x^2+4x+1=30 equation:


Simplifying
4x2 + 4x + 1 = 30

Reorder the terms:
1 + 4x + 4x2 = 30

Solving
1 + 4x + 4x2 = 30

Solving for variable 'x'.

Reorder the terms:
1 + -30 + 4x + 4x2 = 30 + -30

Combine like terms: 1 + -30 = -29
-29 + 4x + 4x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-29 + 4x + 4x2 = 0

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

Divide each side by '4'.
-7.25 + x + x2 = 0

Move the constant term to the right:

Add '7.25' to each side of the equation.
-7.25 + x + 7.25 + x2 = 0 + 7.25

Reorder the terms:
-7.25 + 7.25 + x + x2 = 0 + 7.25

Combine like terms: -7.25 + 7.25 = 0.00
0.00 + x + x2 = 0 + 7.25
x + x2 = 0 + 7.25

Combine like terms: 0 + 7.25 = 7.25
x + x2 = 7.25

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 7.25 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 7.25 + 0.25

Combine like terms: 7.25 + 0.25 = 7.5
1.25 + x2 = 7.5

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 7.5

Calculate the square root of the right side: 2.738612788

Break this problem into two subproblems by setting 
(x + 0.5) equal to 2.738612788 and -2.738612788.

Subproblem 1

x + 0.5 = 2.738612788 Simplifying x + 0.5 = 2.738612788 Reorder the terms: 0.5 + x = 2.738612788 Solving 0.5 + x = 2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 2.738612788 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 2.738612788 + -0.5 x = 2.738612788 + -0.5 Combine like terms: 2.738612788 + -0.5 = 2.238612788 x = 2.238612788 Simplifying x = 2.238612788

Subproblem 2

x + 0.5 = -2.738612788 Simplifying x + 0.5 = -2.738612788 Reorder the terms: 0.5 + x = -2.738612788 Solving 0.5 + x = -2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -2.738612788 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -2.738612788 + -0.5 x = -2.738612788 + -0.5 Combine like terms: -2.738612788 + -0.5 = -3.238612788 x = -3.238612788 Simplifying x = -3.238612788

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.238612788, -3.238612788}

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