(2x+1)(x)=56

Simple and best practice solution for (2x+1)(x)=56 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 (2x+1)(x)=56 equation:


Simplifying
(2x + 1)(x) = 56

Reorder the terms:
(1 + 2x)(x) = 56

Reorder the terms for easier multiplication:
x(1 + 2x) = 56
(1 * x + 2x * x) = 56
(1x + 2x2) = 56

Solving
1x + 2x2 = 56

Solving for variable 'x'.

Reorder the terms:
-56 + 1x + 2x2 = 56 + -56

Combine like terms: 56 + -56 = 0
-56 + 1x + 2x2 = 0

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

Divide each side by '2'.
-28 + 0.5x + x2 = 0

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + 0.5x + 28 + x2 = 0 + 28

Reorder the terms:
-28 + 28 + 0.5x + x2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 0.5x + x2 = 0 + 28
0.5x + x2 = 0 + 28

Combine like terms: 0 + 28 = 28
0.5x + x2 = 28

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = 28 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 28 + 0.0625

Combine like terms: 28 + 0.0625 = 28.0625
0.0625 + 0.5x + x2 = 28.0625

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 28.0625

Calculate the square root of the right side: 5.297405025

Break this problem into two subproblems by setting 
(x + 0.25) equal to 5.297405025 and -5.297405025.

Subproblem 1

x + 0.25 = 5.297405025 Simplifying x + 0.25 = 5.297405025 Reorder the terms: 0.25 + x = 5.297405025 Solving 0.25 + x = 5.297405025 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 5.297405025 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 5.297405025 + -0.25 x = 5.297405025 + -0.25 Combine like terms: 5.297405025 + -0.25 = 5.047405025 x = 5.047405025 Simplifying x = 5.047405025

Subproblem 2

x + 0.25 = -5.297405025 Simplifying x + 0.25 = -5.297405025 Reorder the terms: 0.25 + x = -5.297405025 Solving 0.25 + x = -5.297405025 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -5.297405025 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -5.297405025 + -0.25 x = -5.297405025 + -0.25 Combine like terms: -5.297405025 + -0.25 = -5.547405025 x = -5.547405025 Simplifying x = -5.547405025

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.047405025, -5.547405025}

See similar equations:

| 9g-3(2g+3)+12=0 | | 3a-4ab= | | 4x+6=-x+5x | | (5/12)=-(y/3) | | -4=6(y-6)+2y | | 15+-4y= | | Sin(4K-22)=cos(6k-13) | | 6Xsquared=54 | | -20=5u+5(u+4) | | 9(2m-10)=-90+18m | | 3(x-4)-(y+8)=20 | | 17z+(-8z)-13z=12 | | 10x+5y-9=0 | | (-15k)+19k-(-2k)-7k=14 | | 0=3y+5x+3 | | 20+g+g=-14 | | 10p-4(2p-5)+4=0 | | -3.2=q+9.3 | | 19x^2+36x=0 | | (-5j)-(-7j)=(-10) | | S+7.4=-3.4 | | 3y-2y-y+3y-2y=15 | | 13=c-6 | | 3w-6=-18 | | 9r-6r-2r=12 | | -3m+12m=-18 | | -16t^2=-20 | | 14n+4n-16n+2n-3n=16 | | 15a-4(5-2a)=0 | | 89.5*27= | | (2x)+(3.5x)+(3x+7)=102 | | 4u-2u+4u+3u-7u=16 |

Equations solver categories