20b^2-76b-16=0

Simple and best practice solution for 20b^2-76b-16=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 20b^2-76b-16=0 equation:


Simplifying
20b2 + -76b + -16 = 0

Reorder the terms:
-16 + -76b + 20b2 = 0

Solving
-16 + -76b + 20b2 = 0

Solving for variable 'b'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-4 + -19b + 5b2) = 0

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

Ignore the factor 4.

Subproblem 1

Set the factor '(-1 + -5b)' equal to zero and attempt to solve: Simplifying -1 + -5b = 0 Solving -1 + -5b = 0 Move all terms containing b to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -5b = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -5b = 0 + 1 -5b = 0 + 1 Combine like terms: 0 + 1 = 1 -5b = 1 Divide each side by '-5'. b = -0.2 Simplifying b = -0.2

Subproblem 2

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

Solution

b = {-0.2, 4}

See similar equations:

| -5/3=n/11 | | 3(4k-4)-2(k+8)= | | 20/7=8/7n | | 3x^3-135x^2-588x=0 | | 9x^6-63x^5+72x^4= | | 22+9z+2z-9=14z+18-3z-5 | | 9m+26=6m | | sqrt(4x-7)-sqrt(2x)=1 | | x(x+5)=66x^2 | | v^2+13v=-42 | | 2(2u-7)=23 | | -(3y+2)-(-2y-4)=5 | | 8/4(5*9/8)= | | 36s+30s^2-66=0 | | 13+[7+(10-6)2]-8= | | -24=-3x-9 | | 9b+21b^2-30=0 | | 6-5y=20 | | 6y-5y=20 | | 9y^2+48y-36=0 | | y^2+2y-35=0 | | 2+6x=92 | | 47+12x=28 | | 57=4x-7 | | 96+8c-4c^2=0 | | y=x^2+x-30 | | (15x+10)=(8x+1) | | 4x+2(x+3)=5(x+3) | | 6+8x=110 | | 72+15c-3c^2=0 | | 3v=-2/5 | | 9d+9=4d+14 |

Equations solver categories