-121b^2-36b+36=0

Simple and best practice solution for -121b^2-36b+36=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 -121b^2-36b+36=0 equation:


Simplifying
-121b2 + -36b + 36 = 0

Reorder the terms:
36 + -36b + -121b2 = 0

Solving
36 + -36b + -121b2 = 0

Solving for variable 'b'.

Begin completing the square.  Divide all terms by
-121 the coefficient of the squared term: 

Divide each side by '-121'.
-0.2975206612 + 0.2975206612b + b2 = 0

Move the constant term to the right:

Add '0.2975206612' to each side of the equation.
-0.2975206612 + 0.2975206612b + 0.2975206612 + b2 = 0 + 0.2975206612

Reorder the terms:
-0.2975206612 + 0.2975206612 + 0.2975206612b + b2 = 0 + 0.2975206612

Combine like terms: -0.2975206612 + 0.2975206612 = 0.0000000000
0.0000000000 + 0.2975206612b + b2 = 0 + 0.2975206612
0.2975206612b + b2 = 0 + 0.2975206612

Combine like terms: 0 + 0.2975206612 = 0.2975206612
0.2975206612b + b2 = 0.2975206612

The b term is 0.2975206612b.  Take half its coefficient (0.1487603306).
Square it (0.02212963596) and add it to both sides.

Add '0.02212963596' to each side of the equation.
0.2975206612b + 0.02212963596 + b2 = 0.2975206612 + 0.02212963596

Reorder the terms:
0.02212963596 + 0.2975206612b + b2 = 0.2975206612 + 0.02212963596

Combine like terms: 0.2975206612 + 0.02212963596 = 0.31965029716
0.02212963596 + 0.2975206612b + b2 = 0.31965029716

Factor a perfect square on the left side:
(b + 0.1487603306)(b + 0.1487603306) = 0.31965029716

Calculate the square root of the right side: 0.565376244

Break this problem into two subproblems by setting 
(b + 0.1487603306) equal to 0.565376244 and -0.565376244.

Subproblem 1

b + 0.1487603306 = 0.565376244 Simplifying b + 0.1487603306 = 0.565376244 Reorder the terms: 0.1487603306 + b = 0.565376244 Solving 0.1487603306 + b = 0.565376244 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.1487603306' to each side of the equation. 0.1487603306 + -0.1487603306 + b = 0.565376244 + -0.1487603306 Combine like terms: 0.1487603306 + -0.1487603306 = 0.0000000000 0.0000000000 + b = 0.565376244 + -0.1487603306 b = 0.565376244 + -0.1487603306 Combine like terms: 0.565376244 + -0.1487603306 = 0.4166159134 b = 0.4166159134 Simplifying b = 0.4166159134

Subproblem 2

b + 0.1487603306 = -0.565376244 Simplifying b + 0.1487603306 = -0.565376244 Reorder the terms: 0.1487603306 + b = -0.565376244 Solving 0.1487603306 + b = -0.565376244 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.1487603306' to each side of the equation. 0.1487603306 + -0.1487603306 + b = -0.565376244 + -0.1487603306 Combine like terms: 0.1487603306 + -0.1487603306 = 0.0000000000 0.0000000000 + b = -0.565376244 + -0.1487603306 b = -0.565376244 + -0.1487603306 Combine like terms: -0.565376244 + -0.1487603306 = -0.7141365746 b = -0.7141365746 Simplifying b = -0.7141365746

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.4166159134, -0.7141365746}

See similar equations:

| 107+x=10/7 | | 3r-t= | | 400ln= | | 4+(1+k)=2 | | 28.5=-9.5b+4b | | 2(6-3n)+2=-(6n+3) | | 7d-7= | | =9x^2-36 | | 1+1/3x=27 | | 3.5=z-3.7 | | -2-x=5 | | -2n+1+1n=14 | | x^3+3x^2-2=0 | | 3y=2+-3x | | 3x-5=2(x+7) | | 2.5(6.5+9.5z)=-21.5 | | -7(5+n)=-4+3(-n+7) | | 20/n+5=9 | | 7.5y-4.5-6.5y=-27.5 | | 3k/5+44=3w/4-21 | | 3x+24/x+8 | | -29.5=2+5(n+6) | | 36x+22=-202 | | (5n+(-8))-(4n+(-7))= | | 4a-5-2a-9=28 | | 2n+1+1n=14 | | (155+x)/3=77 | | 6.6=h+4.9 | | -19.5+2.5x=-6.5(6x+8.5) | | N+12=30 | | (25+20)/5+4 | | 9+8.5(1+3.5r)=16.5 |

Equations solver categories