8x(2x+4)+4=16

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Solution for 8x(2x+4)+4=16 equation:


Simplifying
8x(2x + 4) + 4 = 16

Reorder the terms:
8x(4 + 2x) + 4 = 16
(4 * 8x + 2x * 8x) + 4 = 16
(32x + 16x2) + 4 = 16

Reorder the terms:
4 + 32x + 16x2 = 16

Solving
4 + 32x + 16x2 = 16

Solving for variable 'x'.

Reorder the terms:
4 + -16 + 32x + 16x2 = 16 + -16

Combine like terms: 4 + -16 = -12
-12 + 32x + 16x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-12 + 32x + 16x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-3 + 8x + 4x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-3 + 8x + 4x2)' equal to zero and attempt to solve: Simplifying -3 + 8x + 4x2 = 0 Solving -3 + 8x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -0.75 + 2x + x2 = 0 Move the constant term to the right: Add '0.75' to each side of the equation. -0.75 + 2x + 0.75 + x2 = 0 + 0.75 Reorder the terms: -0.75 + 0.75 + 2x + x2 = 0 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + 2x + x2 = 0 + 0.75 2x + x2 = 0 + 0.75 Combine like terms: 0 + 0.75 = 0.75 2x + x2 = 0.75 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 0.75 + 1 Reorder the terms: 1 + 2x + x2 = 0.75 + 1 Combine like terms: 0.75 + 1 = 1.75 1 + 2x + x2 = 1.75 Factor a perfect square on the left side: (x + 1)(x + 1) = 1.75 Calculate the square root of the right side: 1.322875656 Break this problem into two subproblems by setting (x + 1) equal to 1.322875656 and -1.322875656.

Subproblem 1

x + 1 = 1.322875656 Simplifying x + 1 = 1.322875656 Reorder the terms: 1 + x = 1.322875656 Solving 1 + x = 1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.322875656 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.322875656 + -1 x = 1.322875656 + -1 Combine like terms: 1.322875656 + -1 = 0.322875656 x = 0.322875656 Simplifying x = 0.322875656

Subproblem 2

x + 1 = -1.322875656 Simplifying x + 1 = -1.322875656 Reorder the terms: 1 + x = -1.322875656 Solving 1 + x = -1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.322875656 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.322875656 + -1 x = -1.322875656 + -1 Combine like terms: -1.322875656 + -1 = -2.322875656 x = -2.322875656 Simplifying x = -2.322875656

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.322875656, -2.322875656}

Solution

x = {0.322875656, -2.322875656}

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