2b^2-2b-40=0

Simple and best practice solution for 2b^2-2b-40=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 2b^2-2b-40=0 equation:


Simplifying
2b2 + -2b + -40 = 0

Reorder the terms:
-40 + -2b + 2b2 = 0

Solving
-40 + -2b + 2b2 = 0

Solving for variable 'b'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-20 + -1b + b2) = 0

Factor a trinomial.
2((-4 + -1b)(5 + -1b)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-4 + -1b)' equal to zero and attempt to solve: Simplifying -4 + -1b = 0 Solving -4 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1b = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1b = 0 + 4 -1b = 0 + 4 Combine like terms: 0 + 4 = 4 -1b = 4 Divide each side by '-1'. b = -4 Simplifying b = -4

Subproblem 2

Set the factor '(5 + -1b)' equal to zero and attempt to solve: Simplifying 5 + -1b = 0 Solving 5 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1b = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1b = 0 + -5 -1b = 0 + -5 Combine like terms: 0 + -5 = -5 -1b = -5 Divide each side by '-1'. b = 5 Simplifying b = 5

Solution

b = {-4, 5}

See similar equations:

| 4(3x-4)=56 | | 40q+48+24q-16= | | 3x+22=x+48 | | (x+25)+x=2x+(X+10) | | 3x=8-2y | | -61=12y-1 | | -6(-4+-0.67)-4y=24 | | 4(2x+20)+(x-1)=0 | | 16(-6+1.5x)=-24x-96 | | 10g^2+10=29 | | 3d+4c=513 | | log[5](x+26)+log[5](x+126)=5 | | -3x-(-5)+x=2x+(-3) | | 6p+3(3+6p)=-4p-19 | | s^4-2s^2t^2+t^4=0 | | 6m+6m^2+n^2+2n+2+4m+5n= | | (X-8)(x+7)=16 | | 10g^2-10q+3=0 | | 16y=-24x-96 | | k=3w-7 | | 0+2y=12 | | 303.66=273.16+c | | 12=4-2p | | -4-8g=36 | | y=13x-1100 | | 3y-7+5y+9=-14 | | 2=.5x | | 8(12+4z)=3(6z-18) | | k=273.16+c | | 6x-12x+2x=-84 | | 2y-4x=-4y+8 | | y=.5*-16 |

Equations solver categories