6r^2-20r-16=0

Simple and best practice solution for 6r^2-20r-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 6r^2-20r-16=0 equation:


Simplifying
6r2 + -20r + -16 = 0

Reorder the terms:
-16 + -20r + 6r2 = 0

Solving
-16 + -20r + 6r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-8 + -10r + 3r2) = 0

Factor a trinomial.
2((-2 + -3r)(4 + -1r)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-2 + -3r)' equal to zero and attempt to solve: Simplifying -2 + -3r = 0 Solving -2 + -3r = 0 Move all terms containing r to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -3r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3r = 0 + 2 -3r = 0 + 2 Combine like terms: 0 + 2 = 2 -3r = 2 Divide each side by '-3'. r = -0.6666666667 Simplifying r = -0.6666666667

Subproblem 2

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

Solution

r = {-0.6666666667, 4}

See similar equations:

| 6abc^2-15a^2bc+6ab^2c= | | -(2x+4)=2x+3-4x+1 | | Cosx+cos(2x)+cos(3x)+cos(4x)=0 | | .5+.3y=.7y-.3 | | 25-81x^2=0 | | -7-6x=-11-7x | | 4z-21=47 | | 2.5=4.7+7.7 | | C^2+3x-7=0 | | 5z-15=-11+z | | 12-5x=-7x+12 | | x+142/9=71/3 | | 3x^2+10x=-67 | | 4c^2+8x=45 | | 6y-3y+4=-11 | | 4t^2u^2+7tu^2v+3tuw= | | 6a-5ab-9-3ab+2a= | | 10=-8+n-8 | | 5+8x=1+6x | | 12-5x=-7+12 | | -36+20=-5+13x | | 5x-16=38+2x | | 15[2(x+4)-2(1-x)]-x-15=14x+45 | | 9*15= | | ax+0y=c | | 4a^2b+ab^2-8ab= | | 0.2x^3-20x=0 | | 152=61.412+2.317 | | 2+(-1)+1+(-6)= | | 7-6r-19r-14+324-r= | | 9y-24=-3(y-8) | | X^2+2x+36y+253=0 |

Equations solver categories