12r^2=45+51r

Simple and best practice solution for 12r^2=45+51r 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 12r^2=45+51r equation:


Simplifying
12r2 = 45 + 51r

Solving
12r2 = 45 + 51r

Solving for variable 'r'.

Reorder the terms:
-45 + -51r + 12r2 = 45 + 51r + -45 + -51r

Reorder the terms:
-45 + -51r + 12r2 = 45 + -45 + 51r + -51r

Combine like terms: 45 + -45 = 0
-45 + -51r + 12r2 = 0 + 51r + -51r
-45 + -51r + 12r2 = 51r + -51r

Combine like terms: 51r + -51r = 0
-45 + -51r + 12r2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-15 + -17r + 4r2) = 0

Factor a trinomial.
3((-3 + -4r)(5 + -1r)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + -4r)' equal to zero and attempt to solve: Simplifying -3 + -4r = 0 Solving -3 + -4r = 0 Move all terms containing r to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -4r = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -4r = 0 + 3 -4r = 0 + 3 Combine like terms: 0 + 3 = 3 -4r = 3 Divide each side by '-4'. r = -0.75 Simplifying r = -0.75

Subproblem 2

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

Solution

r = {-0.75, 5}

See similar equations:

| 12r^2=45+512 | | x-6=15x^2 | | 2(x-3)-9(x+6)=-4 | | 4a+3=7b | | 7x(x-4)=(2x+2)(x-4) | | -9x+6+7x-3=11 | | 5x+55y=-45 | | 3(d+6)-15=14 | | 9+5x=7-3x | | 2a-5a=1-2a | | 9t-8=6t+7 | | 226.24x=2222.22+5.56x^2 | | 5-2x=3(x-5) | | -5.56x^2+4-1999.82=0 | | -8=12-5a | | -3(x)+2=-11 | | 3p^2-11p=4 | | 2x+2x+2=2+3x+x | | 3(2x-7)=4x+37 | | 7x-12-3x=8x+6 | | 5x^2+37x-24= | | 2x+3x-7=5x+7 | | 3n-16=53 | | 3x^4-8x^3-30x^2-2x-5=0 | | 32=9p | | (X+5)(x*3-2x*2+x+5)= | | 64x^6-49y^6= | | ln(x-3)-ln(x+4)=ln(x-2)-ln(x+9) | | -7x+2=2x-6 | | 525b+(b+420)=3780 | | 525b+(b+500)=3780 | | X^2+16x=-48 |

Equations solver categories