-9(2r^2-2r)+2(10r^2+10r)=

Simple and best practice solution for -9(2r^2-2r)+2(10r^2+10r)= 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 -9(2r^2-2r)+2(10r^2+10r)= equation:


Simplifying
-9(2r2 + -2r) + 2(10r2 + 10r) = 0

Reorder the terms:
-9(-2r + 2r2) + 2(10r2 + 10r) = 0
(-2r * -9 + 2r2 * -9) + 2(10r2 + 10r) = 0
(18r + -18r2) + 2(10r2 + 10r) = 0

Reorder the terms:
18r + -18r2 + 2(10r + 10r2) = 0
18r + -18r2 + (10r * 2 + 10r2 * 2) = 0
18r + -18r2 + (20r + 20r2) = 0

Reorder the terms:
18r + 20r + -18r2 + 20r2 = 0

Combine like terms: 18r + 20r = 38r
38r + -18r2 + 20r2 = 0

Combine like terms: -18r2 + 20r2 = 2r2
38r + 2r2 = 0

Solving
38r + 2r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '2r'.
2r(19 + r) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'r' equal to zero and attempt to solve: Simplifying r = 0 Solving r = 0 Move all terms containing r to the left, all other terms to the right. Simplifying r = 0

Subproblem 2

Set the factor '(19 + r)' equal to zero and attempt to solve: Simplifying 19 + r = 0 Solving 19 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + r = 0 + -19 Combine like terms: 19 + -19 = 0 0 + r = 0 + -19 r = 0 + -19 Combine like terms: 0 + -19 = -19 r = -19 Simplifying r = -19

Solution

r = {0, -19}

See similar equations:

| 2a+4=2a+5 | | .5(e-6)=.75(e+6) | | -7(8-4x)=0 | | (R+6)11= | | -22c+6=14c | | 25(x-1)+4x=x^2 | | 5p-2r-3p+5r= | | 11x-16x-52=40 | | 14x+23=9x-32 | | 7x-5=-9+3x | | 87+6x+3=180 | | 4d*5=68.96 | | -18=7m-m | | graphy=-2 | | 22c+6=14c | | (-2)x[8-(4)-(-10)]= | | 3x+1+x+5+90=180 | | 8q^2+6q-9=0 | | x+(x+1)=(2x-1)(x+4) | | (x+1)2+(y-2)2=4 | | 3a-7whena=3 | | Abc-d=5d | | 3a-7whena=4 | | (X^4-2x^3)+(x-2)=0 | | 6a=2a+24 | | 3y-13=7 | | 3x+5=-44-4 | | .5(6+w)=.25(w+16) | | x^2+y^2-2xy-1=0 | | 5y=-35+7x | | 12(x+2)=72 | | 135+x-22=180 |

Equations solver categories