(5x-8)(4x+8)=2

Simple and best practice solution for (5x-8)(4x+8)=2 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for (5x-8)(4x+8)=2 equation:


Simplifying
(5x + -8)(4x + 8) = 2

Reorder the terms:
(-8 + 5x)(4x + 8) = 2

Reorder the terms:
(-8 + 5x)(8 + 4x) = 2

Multiply (-8 + 5x) * (8 + 4x)
(-8(8 + 4x) + 5x * (8 + 4x)) = 2
((8 * -8 + 4x * -8) + 5x * (8 + 4x)) = 2
((-64 + -32x) + 5x * (8 + 4x)) = 2
(-64 + -32x + (8 * 5x + 4x * 5x)) = 2
(-64 + -32x + (40x + 20x2)) = 2

Combine like terms: -32x + 40x = 8x
(-64 + 8x + 20x2) = 2

Solving
-64 + 8x + 20x2 = 2

Solving for variable 'x'.

Reorder the terms:
-64 + -2 + 8x + 20x2 = 2 + -2

Combine like terms: -64 + -2 = -66
-66 + 8x + 20x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-66 + 8x + 20x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-33 + 4x + 10x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-33 + 4x + 10x2)' equal to zero and attempt to solve: Simplifying -33 + 4x + 10x2 = 0 Solving -33 + 4x + 10x2 = 0 Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. -3.3 + 0.4x + x2 = 0.0 Move the constant term to the right: Add '3.3' to each side of the equation. -3.3 + 0.4x + 3.3 + x2 = 0.0 + 3.3 Reorder the terms: -3.3 + 3.3 + 0.4x + x2 = 0.0 + 3.3 Combine like terms: -3.3 + 3.3 = 0.0 0.0 + 0.4x + x2 = 0.0 + 3.3 0.4x + x2 = 0.0 + 3.3 Combine like terms: 0.0 + 3.3 = 3.3 0.4x + x2 = 3.3 The x term is 0.4x. Take half its coefficient (0.2). Square it (0.04) and add it to both sides. Add '0.04' to each side of the equation. 0.4x + 0.04 + x2 = 3.3 + 0.04 Reorder the terms: 0.04 + 0.4x + x2 = 3.3 + 0.04 Combine like terms: 3.3 + 0.04 = 3.34 0.04 + 0.4x + x2 = 3.34 Factor a perfect square on the left side: (x + 0.2)(x + 0.2) = 3.34 Calculate the square root of the right side: 1.827566688 Break this problem into two subproblems by setting (x + 0.2) equal to 1.827566688 and -1.827566688.

Subproblem 1

x + 0.2 = 1.827566688 Simplifying x + 0.2 = 1.827566688 Reorder the terms: 0.2 + x = 1.827566688 Solving 0.2 + x = 1.827566688 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = 1.827566688 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = 1.827566688 + -0.2 x = 1.827566688 + -0.2 Combine like terms: 1.827566688 + -0.2 = 1.627566688 x = 1.627566688 Simplifying x = 1.627566688

Subproblem 2

x + 0.2 = -1.827566688 Simplifying x + 0.2 = -1.827566688 Reorder the terms: 0.2 + x = -1.827566688 Solving 0.2 + x = -1.827566688 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = -1.827566688 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = -1.827566688 + -0.2 x = -1.827566688 + -0.2 Combine like terms: -1.827566688 + -0.2 = -2.027566688 x = -2.027566688 Simplifying x = -2.027566688

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.627566688, -2.027566688}

Solution

x = {1.627566688, -2.027566688}

See similar equations:

| 2x+(5+10)=47 | | 9x-10y=50 | | y=-1.6x-3.6 | | 28-4a=-12+24+12a | | 40-10y=8x | | V=4/3*3.14*(12)3 | | -3(7p+5)-2(1-17p)=3(8+4p) | | -3(7p+5)-2(1-17p)=3(8+4) | | x+4+3x=8-5x | | x=18/4 | | 7x+30=50 | | 3.5(n-5)=2(n+4.5) | | P=12+2w | | 8e+(n-5)=30 | | 8x+5y=100 | | 2y=4(x+5) | | -7+9y=2y | | 13+2a=-14+5a | | -20+8y=-2y | | 3x+2x-8=x-7 | | X^2-10x+2=5 | | 2x+3=1-x | | 28(2x-1)=3x+22 | | 6(u+1)=4u+14 | | 3x+4x-2=6x+10 | | x^2-2x+1-64-1=0 | | 2916=3w | | 2+0+5g+9=61 | | 2(b-7)=5(b+1)-13 | | 3(3x-3)=7x | | -2x-2/3=12 | | 11-5m-19=8m+28-4m |

Equations solver categories