j^2+28j-11=0

Simple and best practice solution for j^2+28j-11=0 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 j^2+28j-11=0 equation:


Simplifying
j2 + 28j + -11 = 0

Reorder the terms:
-11 + 28j + j2 = 0

Solving
-11 + 28j + j2 = 0

Solving for variable 'j'.

Begin completing the square.

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + 28j + 11 + j2 = 0 + 11

Reorder the terms:
-11 + 11 + 28j + j2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 28j + j2 = 0 + 11
28j + j2 = 0 + 11

Combine like terms: 0 + 11 = 11
28j + j2 = 11

The j term is 28j.  Take half its coefficient (14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
28j + 196 + j2 = 11 + 196

Reorder the terms:
196 + 28j + j2 = 11 + 196

Combine like terms: 11 + 196 = 207
196 + 28j + j2 = 207

Factor a perfect square on the left side:
(j + 14)(j + 14) = 207

Calculate the square root of the right side: 14.38749457

Break this problem into two subproblems by setting 
(j + 14) equal to 14.38749457 and -14.38749457.

Subproblem 1

j + 14 = 14.38749457 Simplifying j + 14 = 14.38749457 Reorder the terms: 14 + j = 14.38749457 Solving 14 + j = 14.38749457 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + j = 14.38749457 + -14 Combine like terms: 14 + -14 = 0 0 + j = 14.38749457 + -14 j = 14.38749457 + -14 Combine like terms: 14.38749457 + -14 = 0.38749457 j = 0.38749457 Simplifying j = 0.38749457

Subproblem 2

j + 14 = -14.38749457 Simplifying j + 14 = -14.38749457 Reorder the terms: 14 + j = -14.38749457 Solving 14 + j = -14.38749457 Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + j = -14.38749457 + -14 Combine like terms: 14 + -14 = 0 0 + j = -14.38749457 + -14 j = -14.38749457 + -14 Combine like terms: -14.38749457 + -14 = -28.38749457 j = -28.38749457 Simplifying j = -28.38749457

Solution

The solution to the problem is based on the solutions from the subproblems. j = {0.38749457, -28.38749457}

See similar equations:

| w=x+5v | | 6z-12=30 | | 11x-6=5(2x+4)-14 | | 1.4x+11=1.9x+7.5 | | -6x+11-3x=-33 | | 4m^2+9m+3=0 | | 9x+4=9x+1 | | 0.25(12x+4)-14+4x=8 | | 6a+2b+5a-6b= | | 2(x+2)-8x=64 | | k^2-4k=43 | | y+(-7)=-19 | | 7n-4(5-2x)=10 | | 8x+5y+11x-2y= | | -4x+2x+3=-x-x+4 | | 28-9x=6 | | 10u+2u-10u-u=17 | | 17=3-x | | -5-2x-7x=-104 | | 15x^2+x-0.09=0 | | -3t^2-5t+5=0 | | 3y+1-2y+3= | | X+12=3y-7 | | a+-15=-32 | | 10-10x=1-9 | | -7+11Y=9-5y | | 4m+3p-m+6p= | | -4x+40=40x | | -2x-2-3x=-37 | | 160+0.25x=342.50 | | x^2+2sqrt(3)x+5=0 | | 2(x-2)+10=2(2x+9) |

Equations solver categories