2x^2=-40+21x

Simple and best practice solution for 2x^2=-40+21x 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=-40+21x equation:


Simplifying
2x2 = -40 + 21x

Solving
2x2 = -40 + 21x

Solving for variable 'x'.

Reorder the terms:
40 + -21x + 2x2 = -40 + 21x + 40 + -21x

Reorder the terms:
40 + -21x + 2x2 = -40 + 40 + 21x + -21x

Combine like terms: -40 + 40 = 0
40 + -21x + 2x2 = 0 + 21x + -21x
40 + -21x + 2x2 = 21x + -21x

Combine like terms: 21x + -21x = 0
40 + -21x + 2x2 = 0

Factor a trinomial.
(5 + -2x)(8 + -1x) = 0

Subproblem 1

Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 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 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Subproblem 2

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8

Solution

x = {2.5, 8}

See similar equations:

| 8(x+5)=6x+20 | | 11(d+6)=44 | | 9x=12x-39 | | 8y-4fory=3 | | -36=-2x+4(x-4) | | -16t^2+50t+4.5=3.1931 | | X+322=-139 | | 0.6x=18x | | 96x+64=6 | | -6v+4(v+6)=28 | | 12(x+6)=10x+11 | | 7(4-6x)=3(9-15x)+3 | | 4=.75(0)+x | | 5c^2+7c+5=6 | | 3.7x-4.1y=35.3 | | 72ab-48a-45b+30=0 | | 5(u-2)+3u=-2 | | -422-X=47 | | 7(2y-1)=63 | | -2x+16+3=2x+3 | | 8x+7-3=6x+19-4x | | 3(5x+2)-14=5(3x-4) | | f(x)=(3x-4)(2x+2)x-3 | | Sin64=x/17 | | 5-p=6 | | -6t^5+175+500=0 | | -10x-2+12=-10 | | 18+11v=w+13t | | f(x)=5log(7x) | | -8.5(5.5r-5)=18.5+9.5r | | 10x^3-73x^2+126x=0 | | X-(-246)=413 |

Equations solver categories