3(4x-1)(4x+3)=49x

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Solution for 3(4x-1)(4x+3)=49x equation:


Simplifying
3(4x + -1)(4x + 3) = 49x

Reorder the terms:
3(-1 + 4x)(4x + 3) = 49x

Reorder the terms:
3(-1 + 4x)(3 + 4x) = 49x

Multiply (-1 + 4x) * (3 + 4x)
3(-1(3 + 4x) + 4x * (3 + 4x)) = 49x
3((3 * -1 + 4x * -1) + 4x * (3 + 4x)) = 49x
3((-3 + -4x) + 4x * (3 + 4x)) = 49x
3(-3 + -4x + (3 * 4x + 4x * 4x)) = 49x
3(-3 + -4x + (12x + 16x2)) = 49x

Combine like terms: -4x + 12x = 8x
3(-3 + 8x + 16x2) = 49x
(-3 * 3 + 8x * 3 + 16x2 * 3) = 49x
(-9 + 24x + 48x2) = 49x

Solving
-9 + 24x + 48x2 = 49x

Solving for variable 'x'.

Reorder the terms:
-9 + 24x + -49x + 48x2 = 49x + -49x

Combine like terms: 24x + -49x = -25x
-9 + -25x + 48x2 = 49x + -49x

Combine like terms: 49x + -49x = 0
-9 + -25x + 48x2 = 0

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

Divide each side by '48'.
-0.1875 + -0.5208333333x + x2 = 0

Move the constant term to the right:

Add '0.1875' to each side of the equation.
-0.1875 + -0.5208333333x + 0.1875 + x2 = 0 + 0.1875

Reorder the terms:
-0.1875 + 0.1875 + -0.5208333333x + x2 = 0 + 0.1875

Combine like terms: -0.1875 + 0.1875 = 0.0000
0.0000 + -0.5208333333x + x2 = 0 + 0.1875
-0.5208333333x + x2 = 0 + 0.1875

Combine like terms: 0 + 0.1875 = 0.1875
-0.5208333333x + x2 = 0.1875

The x term is -0.5208333333x.  Take half its coefficient (-0.2604166667).
Square it (0.06781684030) and add it to both sides.

Add '0.06781684030' to each side of the equation.
-0.5208333333x + 0.06781684030 + x2 = 0.1875 + 0.06781684030

Reorder the terms:
0.06781684030 + -0.5208333333x + x2 = 0.1875 + 0.06781684030

Combine like terms: 0.1875 + 0.06781684030 = 0.2553168403
0.06781684030 + -0.5208333333x + x2 = 0.2553168403

Factor a perfect square on the left side:
(x + -0.2604166667)(x + -0.2604166667) = 0.2553168403

Calculate the square root of the right side: 0.505288868

Break this problem into two subproblems by setting 
(x + -0.2604166667) equal to 0.505288868 and -0.505288868.

Subproblem 1

x + -0.2604166667 = 0.505288868 Simplifying x + -0.2604166667 = 0.505288868 Reorder the terms: -0.2604166667 + x = 0.505288868 Solving -0.2604166667 + x = 0.505288868 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2604166667' to each side of the equation. -0.2604166667 + 0.2604166667 + x = 0.505288868 + 0.2604166667 Combine like terms: -0.2604166667 + 0.2604166667 = 0.0000000000 0.0000000000 + x = 0.505288868 + 0.2604166667 x = 0.505288868 + 0.2604166667 Combine like terms: 0.505288868 + 0.2604166667 = 0.7657055347 x = 0.7657055347 Simplifying x = 0.7657055347

Subproblem 2

x + -0.2604166667 = -0.505288868 Simplifying x + -0.2604166667 = -0.505288868 Reorder the terms: -0.2604166667 + x = -0.505288868 Solving -0.2604166667 + x = -0.505288868 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2604166667' to each side of the equation. -0.2604166667 + 0.2604166667 + x = -0.505288868 + 0.2604166667 Combine like terms: -0.2604166667 + 0.2604166667 = 0.0000000000 0.0000000000 + x = -0.505288868 + 0.2604166667 x = -0.505288868 + 0.2604166667 Combine like terms: -0.505288868 + 0.2604166667 = -0.2448722013 x = -0.2448722013 Simplifying x = -0.2448722013

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.7657055347, -0.2448722013}

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