-8b^2-2b=-16

Simple and best practice solution for -8b^2-2b=-16 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 -8b^2-2b=-16 equation:


Simplifying
-8b2 + -2b = -16

Reorder the terms:
-2b + -8b2 = -16

Solving
-2b + -8b2 = -16

Solving for variable 'b'.

Reorder the terms:
16 + -2b + -8b2 = -16 + 16

Combine like terms: -16 + 16 = 0
16 + -2b + -8b2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(8 + -1b + -4b2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(8 + -1b + -4b2)' equal to zero and attempt to solve: Simplifying 8 + -1b + -4b2 = 0 Solving 8 + -1b + -4b2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. -2 + 0.25b + b2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + 0.25b + 2 + b2 = 0 + 2 Reorder the terms: -2 + 2 + 0.25b + b2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 0.25b + b2 = 0 + 2 0.25b + b2 = 0 + 2 Combine like terms: 0 + 2 = 2 0.25b + b2 = 2 The b term is 0.25b. Take half its coefficient (0.125). Square it (0.015625) and add it to both sides. Add '0.015625' to each side of the equation. 0.25b + 0.015625 + b2 = 2 + 0.015625 Reorder the terms: 0.015625 + 0.25b + b2 = 2 + 0.015625 Combine like terms: 2 + 0.015625 = 2.015625 0.015625 + 0.25b + b2 = 2.015625 Factor a perfect square on the left side: (b + 0.125)(b + 0.125) = 2.015625 Calculate the square root of the right side: 1.419727086 Break this problem into two subproblems by setting (b + 0.125) equal to 1.419727086 and -1.419727086.

Subproblem 1

b + 0.125 = 1.419727086 Simplifying b + 0.125 = 1.419727086 Reorder the terms: 0.125 + b = 1.419727086 Solving 0.125 + b = 1.419727086 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + b = 1.419727086 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + b = 1.419727086 + -0.125 b = 1.419727086 + -0.125 Combine like terms: 1.419727086 + -0.125 = 1.294727086 b = 1.294727086 Simplifying b = 1.294727086

Subproblem 2

b + 0.125 = -1.419727086 Simplifying b + 0.125 = -1.419727086 Reorder the terms: 0.125 + b = -1.419727086 Solving 0.125 + b = -1.419727086 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + b = -1.419727086 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + b = -1.419727086 + -0.125 b = -1.419727086 + -0.125 Combine like terms: -1.419727086 + -0.125 = -1.544727086 b = -1.544727086 Simplifying b = -1.544727086

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.294727086, -1.544727086}

Solution

b = {1.294727086, -1.544727086}

See similar equations:

| -4p-7=28-3p | | -16-x=26-3x | | 57+67+x=180 | | a=3x^3*4x^2 | | 3w+40=4w+20 | | Ln(x)=.769 | | V-4v+10v=15 | | 2/radical3 | | a^2+b^2+c^2=25 | | 16x-6=11x+24 | | 5/16y=-15 | | -6-5-3n=10-10n | | -1/8(8x-16y) | | 3x-2(26-2x)=-2 | | Y=2-2(0) | | 7y+1=2x | | w+36=5w | | a=2x^2*2x^3 | | Y=2-2(1) | | -1/8(8x-24y) | | 3(2n-4)=(3n+4)+7 | | 2x=7y+1 | | 6g=168 | | 12-16x= | | 3x^2-10-25=0 | | 3*x^5-5*x^3+3=0 | | 2(-x+2)=4-2x | | (2x+3)(x)=77 | | 3n+12=n+20 | | -5c=-4c+6 | | 4+2.8x=51 | | x-3/10=4/25 |

Equations solver categories