If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying r2 = -40 + -13r Solving r2 = -40 + -13r Solving for variable 'r'. Reorder the terms: 40 + 13r + r2 = -40 + -13r + 40 + 13r Reorder the terms: 40 + 13r + r2 = -40 + 40 + -13r + 13r Combine like terms: -40 + 40 = 0 40 + 13r + r2 = 0 + -13r + 13r 40 + 13r + r2 = -13r + 13r Combine like terms: -13r + 13r = 0 40 + 13r + r2 = 0 Factor a trinomial. (8 + r)(5 + r) = 0Subproblem 1
Set the factor '(8 + r)' equal to zero and attempt to solve: Simplifying 8 + r = 0 Solving 8 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + r = 0 + -8 Combine like terms: 8 + -8 = 0 0 + r = 0 + -8 r = 0 + -8 Combine like terms: 0 + -8 = -8 r = -8 Simplifying r = -8Subproblem 2
Set the factor '(5 + r)' equal to zero and attempt to solve: Simplifying 5 + r = 0 Solving 5 + r = 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 + r = 0 + -5 Combine like terms: 5 + -5 = 0 0 + r = 0 + -5 r = 0 + -5 Combine like terms: 0 + -5 = -5 r = -5 Simplifying r = -5Solution
r = {-8, -5}
| x^2-12x+27=0 | | 3x^2-12x=-12 | | 3x^2+17x+5=-5 | | 3x^2+17x+5=-53 | | 3X^2+22X-300=0 | | 2x^2-8x=-8 | | 15x^2-46x+35=0 | | x^2+2x-13=2 | | 8x+7=23 | | x^2+2x-13=0 | | 10z^2-9z-9= | | x^2-10x+29=0 | | x^2+6=5x | | x^2+8x+32=0 | | -8=w-(-8) | | x^2-4=2x | | 8x^2=72 | | -2-a+4=12 | | a=-1.805555556 | | 0.15x+.05(20-x)=.10(6) | | 14=0.1x | | (2x-1)*(8x-4)=-1 | | 5y+3=15 | | 2y=14-6x | | 5(2z-3)=9(z+4) | | 4(y-7)+2=-14 | | 5(n+3)-2=23 | | 2x+8y=3 | | 6(4m-7)=-18 | | 6(3m-2)=60 | | 6(2a-3)=30 | | -2x-3=-3 |