2b^2+10b=11

Simple and best practice solution for 2b^2+10b=11 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 2b^2+10b=11 equation:


Simplifying
2b2 + 10b = 11

Reorder the terms:
10b + 2b2 = 11

Solving
10b + 2b2 = 11

Solving for variable 'b'.

Reorder the terms:
-11 + 10b + 2b2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + 10b + 2b2 = 0

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

Divide each side by '2'.
-5.5 + 5b + b2 = 0

Move the constant term to the right:

Add '5.5' to each side of the equation.
-5.5 + 5b + 5.5 + b2 = 0 + 5.5

Reorder the terms:
-5.5 + 5.5 + 5b + b2 = 0 + 5.5

Combine like terms: -5.5 + 5.5 = 0.0
0.0 + 5b + b2 = 0 + 5.5
5b + b2 = 0 + 5.5

Combine like terms: 0 + 5.5 = 5.5
5b + b2 = 5.5

The b term is 5b.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5b + 6.25 + b2 = 5.5 + 6.25

Reorder the terms:
6.25 + 5b + b2 = 5.5 + 6.25

Combine like terms: 5.5 + 6.25 = 11.75
6.25 + 5b + b2 = 11.75

Factor a perfect square on the left side:
(b + 2.5)(b + 2.5) = 11.75

Calculate the square root of the right side: 3.4278273

Break this problem into two subproblems by setting 
(b + 2.5) equal to 3.4278273 and -3.4278273.

Subproblem 1

b + 2.5 = 3.4278273 Simplifying b + 2.5 = 3.4278273 Reorder the terms: 2.5 + b = 3.4278273 Solving 2.5 + b = 3.4278273 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + b = 3.4278273 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + b = 3.4278273 + -2.5 b = 3.4278273 + -2.5 Combine like terms: 3.4278273 + -2.5 = 0.9278273 b = 0.9278273 Simplifying b = 0.9278273

Subproblem 2

b + 2.5 = -3.4278273 Simplifying b + 2.5 = -3.4278273 Reorder the terms: 2.5 + b = -3.4278273 Solving 2.5 + b = -3.4278273 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + b = -3.4278273 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + b = -3.4278273 + -2.5 b = -3.4278273 + -2.5 Combine like terms: -3.4278273 + -2.5 = -5.9278273 b = -5.9278273 Simplifying b = -5.9278273

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.9278273, -5.9278273}

See similar equations:

| 2(3x-4)+5=17 | | 7p-9= | | -3x-4+4(3x-5)=-5x+32 | | y=[2c-5] | | sin(x+40)=-sinx | | 1-3(x-1)=-8 | | (-9)=a+(-4) | | X=9x+2-6c | | -3(-3+2)-6= | | 0=-2y+x+4 | | 2x*x+8x-7=0 | | ln(x)=2.68 | | (t)4-6=9 | | 15v-7v=16 | | 8x=-6+11 | | 162=-9(-2+x) | | (a)4+6=14 | | -7c-17=-15-10c | | 12m=91-m | | -2(2-x)=3 | | 4+8(2x+3)+6x=50 | | 2b+(3b-2)+(b+7)=65 | | 3(20x+75)=825 | | 2w+9-16=-19 | | 4x+2(3x+1)=32 | | -4+12-17=x | | 2n+150=3450 | | 16=y/4-15 | | 64x^2-144x-81=0 | | -1=a-3/20 | | 4a-3a=0 | | 4x^2+19xy-5y^2=0 |

Equations solver categories