3x(8+2x)=4+5

Simple and best practice solution for 3x(8+2x)=4+5 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 3x(8+2x)=4+5 equation:


Simplifying
3x(8 + 2x) = 4 + 5
(8 * 3x + 2x * 3x) = 4 + 5
(24x + 6x2) = 4 + 5

Combine like terms: 4 + 5 = 9
24x + 6x2 = 9

Solving
24x + 6x2 = 9

Solving for variable 'x'.

Reorder the terms:
-9 + 24x + 6x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + 24x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + 8x + 2x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + 8x + 2x2)' equal to zero and attempt to solve: Simplifying -3 + 8x + 2x2 = 0 Solving -3 + 8x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -1.5 + 4x + x2 = 0 Move the constant term to the right: Add '1.5' to each side of the equation. -1.5 + 4x + 1.5 + x2 = 0 + 1.5 Reorder the terms: -1.5 + 1.5 + 4x + x2 = 0 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + 4x + x2 = 0 + 1.5 4x + x2 = 0 + 1.5 Combine like terms: 0 + 1.5 = 1.5 4x + x2 = 1.5 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 = 1.5 + 4 Reorder the terms: 4 + 4x + x2 = 1.5 + 4 Combine like terms: 1.5 + 4 = 5.5 4 + 4x + x2 = 5.5 Factor a perfect square on the left side: (x + 2)(x + 2) = 5.5 Calculate the square root of the right side: 2.34520788 Break this problem into two subproblems by setting (x + 2) equal to 2.34520788 and -2.34520788.

Subproblem 1

x + 2 = 2.34520788 Simplifying x + 2 = 2.34520788 Reorder the terms: 2 + x = 2.34520788 Solving 2 + x = 2.34520788 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 = 2.34520788 + -2 Combine like terms: 2 + -2 = 0 0 + x = 2.34520788 + -2 x = 2.34520788 + -2 Combine like terms: 2.34520788 + -2 = 0.34520788 x = 0.34520788 Simplifying x = 0.34520788

Subproblem 2

x + 2 = -2.34520788 Simplifying x + 2 = -2.34520788 Reorder the terms: 2 + x = -2.34520788 Solving 2 + x = -2.34520788 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 = -2.34520788 + -2 Combine like terms: 2 + -2 = 0 0 + x = -2.34520788 + -2 x = -2.34520788 + -2 Combine like terms: -2.34520788 + -2 = -4.34520788 x = -4.34520788 Simplifying x = -4.34520788

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.34520788, -4.34520788}

Solution

x = {0.34520788, -4.34520788}

See similar equations:

| (-8.8)(4.9)=x | | 5x*x=180 | | 2(12-y)+1.5y=20 | | 100+15x=220+10x | | 3t-4=5t | | 2x^2=40x | | f=60585/15 | | c(30)=0.20x+13.75 | | 2(20-y)+1.5y=12 | | 63.25-4x= | | 2k^2=6k+4 | | -4m+2=20+2m | | -15=-15u | | 1/(x^1/2)=0.1 | | 1/(x^0.5)=0.1 | | 5-d=75 | | 4w^2+12+9=81 | | 63.25-(4+x)= | | 9w^2-18w-7=0 | | 3x^2-3=15 | | 9a-3=-39 | | F(x)=4x^3+34 | | 7(5x+2)-103= | | 14-3b=20 | | 19=a-6.6 | | a-3b=20 | | C=(3.14)3 | | -26+p=-36 | | 6.4=51.2 | | x*6=36 | | 356(63-4)d=89 | | 30-2y=29 |

Equations solver categories