-3b^2+b+5=0

Simple and best practice solution for -3b^2+b+5=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 -3b^2+b+5=0 equation:


Simplifying
-3b2 + b + 5 = 0

Reorder the terms:
5 + b + -3b2 = 0

Solving
5 + b + -3b2 = 0

Solving for variable 'b'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-1.666666667 + -0.3333333333b + b2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + -0.3333333333b + 1.666666667 + b2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + -0.3333333333b + b2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + -0.3333333333b + b2 = 0 + 1.666666667
-0.3333333333b + b2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
-0.3333333333b + b2 = 1.666666667

The b term is b.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.3333333333b + 0.25 + b2 = 1.666666667 + 0.25

Reorder the terms:
0.25 + -0.3333333333b + b2 = 1.666666667 + 0.25

Combine like terms: 1.666666667 + 0.25 = 1.916666667
0.25 + -0.3333333333b + b2 = 1.916666667

Factor a perfect square on the left side:
(b + 0.5)(b + 0.5) = 1.916666667

Calculate the square root of the right side: 1.384437311

Break this problem into two subproblems by setting 
(b + 0.5) equal to 1.384437311 and -1.384437311.

Subproblem 1

b + 0.5 = 1.384437311 Simplifying b + 0.5 = 1.384437311 Reorder the terms: 0.5 + b = 1.384437311 Solving 0.5 + b = 1.384437311 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + b = 1.384437311 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + b = 1.384437311 + -0.5 b = 1.384437311 + -0.5 Combine like terms: 1.384437311 + -0.5 = 0.884437311 b = 0.884437311 Simplifying b = 0.884437311

Subproblem 2

b + 0.5 = -1.384437311 Simplifying b + 0.5 = -1.384437311 Reorder the terms: 0.5 + b = -1.384437311 Solving 0.5 + b = -1.384437311 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + b = -1.384437311 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + b = -1.384437311 + -0.5 b = -1.384437311 + -0.5 Combine like terms: -1.384437311 + -0.5 = -1.884437311 b = -1.884437311 Simplifying b = -1.884437311

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.884437311, -1.884437311}

See similar equations:

| 0.74*x=3500 | | 4(x+9)+11=9x-5(x-3) | | 15x^2-32x+9= | | -0.45=-0.3d | | 6b^3+3b^3+2= | | 0.8*x-0.94*x=3500 | | 3(3+6)=4(4+x) | | -3+2r=9-2r | | 0.8*x+0.94*x=3500 | | 4x=3x+48 | | (4x-50)(90-30x)=0 | | -3(x-2)+4=4(x-1) | | -6x-10=-1/2x-21 | | 49(p)(p)-64p+12=0 | | 25x^3-215x^2+280x=0 | | 5u-14=-5+8u | | 10x+12x=x | | 28-11(4n+4)=6(7n+1)-31 | | 6=2x+26 | | 2y-1=-3(2+y) | | 18x=-135 | | 82+94x=88 | | 3f-4g-2f+7g= | | 7+4(2-x)-2x=8+x | | 2+12x=-9+x | | (4x/3)-4=16 | | 1/3d=55 | | 10=4+3(x+11) | | 17x-28=0 | | v=(8-2x)(8-2x)(x) | | A+92-16= | | 4x/3-4=16 |

Equations solver categories