r^2-10=3r

Simple and best practice solution for r^2-10=3r 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 r^2-10=3r equation:


Simplifying
r2 + -10 = 3r

Reorder the terms:
-10 + r2 = 3r

Solving
-10 + r2 = 3r

Solving for variable 'r'.

Reorder the terms:
-10 + -3r + r2 = 3r + -3r

Combine like terms: 3r + -3r = 0
-10 + -3r + r2 = 0

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

Subproblem 1

Set the factor '(-2 + -1r)' equal to zero and attempt to solve: Simplifying -2 + -1r = 0 Solving -2 + -1r = 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 + -1r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1r = 0 + 2 -1r = 0 + 2 Combine like terms: 0 + 2 = 2 -1r = 2 Divide each side by '-1'. r = -2 Simplifying r = -2

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 = {-2, 5}

See similar equations:

| 4m-5=5 | | 14x^2-23x=0 | | B-43.4=-120 | | -5x-6y=-15 | | 2v^2-20v=-21 | | 16+2x+16x^2+2x^3= | | 6x+3y=300 | | 12y+8y=0 | | 86=24 | | 9x^2-3x^2=6x+7x | | a+4=a^2+0.25 | | 6x+2y=16 | | -10y+15=5 | | 75x+45y=450 | | 18x^4-54x^2=0 | | x^4=27 | | 2+7=15 | | 4t^2=-17t | | 3+4g=30-5g | | 3e^2x+3=10 | | 9x^2-31x=51 | | x^2-50=5x | | y-x=-5 | | p=2k+2v | | -7x+23=2(x-2) | | 3x-0.4=x+1.4 | | m+2.6=34 | | 26=2(y+7)-8y | | 2x+8y=-11 | | 11X^2+7x+1=0 | | 3x^2+25x+42= | | an^2=-144 |

Equations solver categories