-7r^2+140r-700=0

Simple and best practice solution for -7r^2+140r-700=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 -7r^2+140r-700=0 equation:


Simplifying
-7r2 + 140r + -700 = 0

Reorder the terms:
-700 + 140r + -7r2 = 0

Solving
-700 + 140r + -7r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-100 + 20r + -1r2) = 0

Factor a trinomial.
7((-10 + r)(10 + -1r)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(-10 + r)' equal to zero and attempt to solve: Simplifying -10 + r = 0 Solving -10 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + r = 0 + 10 Combine like terms: -10 + 10 = 0 0 + r = 0 + 10 r = 0 + 10 Combine like terms: 0 + 10 = 10 r = 10 Simplifying r = 10

Subproblem 2

Set the factor '(10 + -1r)' equal to zero and attempt to solve: Simplifying 10 + -1r = 0 Solving 10 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1r = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1r = 0 + -10 -1r = 0 + -10 Combine like terms: 0 + -10 = -10 -1r = -10 Divide each side by '-1'. r = 10 Simplifying r = 10

Solution

r = {10, 10}

See similar equations:

| 5y+2(y-8)=4(y+2)-2 | | x-4(2x+3)=23 | | =5m^4*3m^2 | | 5y+25=0 | | -4y^2+32y-64=0 | | 5m^4*3m^2= | | 2x^2-6=-78 | | -2w-16=2w | | 8a^2-72=0 | | 9(w-5)=-45 | | 120=6x+6(-4x-4) | | -3(t-4)+5y=4t-9 | | 6x+9=y | | -5=-(x+9) | | -6y+10=-2(4y+2) | | 4x^2+28x=-49 | | 4x^2+28x=-47 | | 5x^2+6x-18=24-23x | | 3x+40-4x=3-9x+5 | | -0.1u-1.6=0.1u-0.4 | | -4x-79=-8x+29 | | 20z+1.5(6z-48)-9z=14z+0.2(50z-250)-9z | | x^2-2.75+1.5=0 | | 4x^2+4x-12=23-19x | | 5x+10-3x=12 | | .67x-1=5 | | 3(x+5)+x=7 | | x^2-14x-32=0 | | (6e^3-e)-(e^3+7e-4)= | | 8(x-4)-2=6x+4 | | 24+8(z-3)=7z+1 | | x^2-22x+112=0 |

Equations solver categories