2x^2-21x=-55

Simple and best practice solution for 2x^2-21x=-55 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 2x^2-21x=-55 equation:


Simplifying
2x2 + -21x = -55

Reorder the terms:
-21x + 2x2 = -55

Solving
-21x + 2x2 = -55

Solving for variable 'x'.

Reorder the terms:
55 + -21x + 2x2 = -55 + 55

Combine like terms: -55 + 55 = 0
55 + -21x + 2x2 = 0

Factor a trinomial.
(5 + -1x)(11 + -2x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(11 + -2x)' equal to zero and attempt to solve: Simplifying 11 + -2x = 0 Solving 11 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -2x = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -2x = 0 + -11 -2x = 0 + -11 Combine like terms: 0 + -11 = -11 -2x = -11 Divide each side by '-2'. x = 5.5 Simplifying x = 5.5

Solution

x = {5, 5.5}

See similar equations:

| y=x^4-8*x^3+18*x^2+15 | | x-153=0 | | 12+(x^2-2)=22 | | 12+(x^2-2)=66 | | 2n^2+8n-336=0 | | 12345x=54321 | | (x+2y)dx+(y)dy=0 | | (3x+1)*(x+3)=0 | | (3x+4)(-2x-1)=0 | | 2k^2-3k+1=1 | | x(tan^2y)*dy+x*dy=(2x^2+tany)dx | | x(tan^2)y*dy+x*dy=(2x^2+tany)dx | | X+(x+3)=4 | | x^2+y^2-2x=0 | | x^2+9y^2=0 | | 3c+2b=71 | | x^3+6x^2+9=0 | | 7n-2n=8n-(4n) | | Y=4-lx-4l | | 5+x+12= | | 25x+88x+6a=15 | | 1.5-12-50=0 | | 4(-3)+5(-2)= | | -2-(-3+7)-6= | | -2+7+(-5)= | | 7y+3=3x-5 | | 3*5+5(2+3)= | | 2x^3-20x=0 | | X^2-7=7-x^2 | | -5x-6y=11 | | 3*X^2-1=0 | | -13=n+7 |

Equations solver categories