-b^2-8b+10=0

Simple and best practice solution for -b^2-8b+10=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 -b^2-8b+10=0 equation:


Simplifying
-1b2 + -8b + 10 = 0

Reorder the terms:
10 + -8b + -1b2 = 0

Solving
10 + -8b + -1b2 = 0

Solving for variable 'b'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-10 + 8b + b2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 8b + 10 + b2 = 0 + 10

Reorder the terms:
-10 + 10 + 8b + b2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 8b + b2 = 0 + 10
8b + b2 = 0 + 10

Combine like terms: 0 + 10 = 10
8b + b2 = 10

The b term is 8b.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8b + 16 + b2 = 10 + 16

Reorder the terms:
16 + 8b + b2 = 10 + 16

Combine like terms: 10 + 16 = 26
16 + 8b + b2 = 26

Factor a perfect square on the left side:
(b + 4)(b + 4) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(b + 4) equal to 5.099019514 and -5.099019514.

Subproblem 1

b + 4 = 5.099019514 Simplifying b + 4 = 5.099019514 Reorder the terms: 4 + b = 5.099019514 Solving 4 + b = 5.099019514 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + b = 5.099019514 + -4 Combine like terms: 4 + -4 = 0 0 + b = 5.099019514 + -4 b = 5.099019514 + -4 Combine like terms: 5.099019514 + -4 = 1.099019514 b = 1.099019514 Simplifying b = 1.099019514

Subproblem 2

b + 4 = -5.099019514 Simplifying b + 4 = -5.099019514 Reorder the terms: 4 + b = -5.099019514 Solving 4 + b = -5.099019514 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + b = -5.099019514 + -4 Combine like terms: 4 + -4 = 0 0 + b = -5.099019514 + -4 b = -5.099019514 + -4 Combine like terms: -5.099019514 + -4 = -9.099019514 b = -9.099019514 Simplifying b = -9.099019514

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.099019514, -9.099019514}

See similar equations:

| 63+4y-25=16y-11-5y | | -3z+8(-2z)=-12 | | 2k^2-10k+12=0 | | 35x-5y=-195 | | 1/2-6=18 | | -4x+32+4x-27= | | X-8=-7+3 | | 10x^2-8x-15x+12= | | 3x^2+17x-8=45 | | 12x^2-2x=-3 | | b^2-63=-18b | | (x+0.1)(x+4.1)=0 | | 7[2x+3]-3[5x-2]=5[3x-4]-3[3x-4] | | 6+3(z-2)=-3z+5 | | 2(x-5)=21 | | (6x+7)(5x-9)=0 | | y=x^2-18x-79.283 | | 12t-7t=5 | | 2xy+xz=0 | | 6=1-2k+5 | | 7t^6-49t^5-308t^4=0 | | 9k-8=37 | | n-9=56 | | 4(x+1)=48 | | c=d(3.14) | | m=48/5 | | 5x+3-4x=11 | | X+2x+(7x+1)=21 | | Ln(2x)=2x-7 | | 11(5-w)+3=-3(w-3)-9 | | -2x-1+yi=3x-5i | | 4x^2+3x-90=0 |

Equations solver categories