0=20x^2+9x-20

Simple and best practice solution for 0=20x^2+9x-20 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 0=20x^2+9x-20 equation: 


Simplifying
0 = 20x2 + 9x + -20

Reorder the terms:
0 = -20 + 9x + 20x2

Solving
0 = -20 + 9x + 20x2

Solving for variable 'x'.

Combine like terms: 0 + 20 = 20
20 + -9x + -20x2 = -20 + 9x + 20x2 + 20 + -9x + -20x2

Reorder the terms:
20 + -9x + -20x2 = -20 + 20 + 9x + -9x + 20x2 + -20x2

Combine like terms: -20 + 20 = 0
20 + -9x + -20x2 = 0 + 9x + -9x + 20x2 + -20x2
20 + -9x + -20x2 = 9x + -9x + 20x2 + -20x2

Combine like terms: 9x + -9x = 0
20 + -9x + -20x2 = 0 + 20x2 + -20x2
20 + -9x + -20x2 = 20x2 + -20x2

Combine like terms: 20x2 + -20x2 = 0
20 + -9x + -20x2 = 0

Factor a trinomial.
(4 + -5x)(5 + 4x) = 0


Subproblem 1
Set the factor '(4 + -5x)' equal to zero and attempt to solve:

Simplifying
4 + -5x = 0

Solving
4 + -5x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + -5x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -5x = 0 + -4
-5x = 0 + -4

Combine like terms: 0 + -4 = -4
-5x = -4

Divide each side by '-5'.
x = 0.8

Simplifying
x = 0.8

Subproblem 2
Set the factor '(5 + 4x)' equal to zero and attempt to solve:

Simplifying
5 + 4x = 0

Solving
5 + 4x = 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 + 4x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 4x = 0 + -5
4x = 0 + -5

Combine like terms: 0 + -5 = -5
4x = -5

Divide each side by '4'.
x = -1.25

Simplifying
x = -1.25
Solution
x = {0.8, -1.25}

See similar equations:

| -2(y+5)=-31 | | 4z+2z=5z-9 | | x-8y^3=0 | | -2(y+5)=-13 | | 3x-8y+2x-5+5y= | | 17z=-3 | | 5(3.5c+2.5)=-30.5-7.5c | | -0.2p+3.3+6=30 | | 3x-2y=x+1 | | -2X+7X+5=2+5x+8 | | 7x-9x+2=x-3+5 | | 2(3x-4)-x=2x-1 | | -4.1(y-4.1)=6.8 | | -4+9.5(1+9d)=26.5 | | x^2-20x-9=0 | | 1/2(y-2)+2=3/4(5y-16) | | 2n+3=33 | | x^3-36x-84=0 | | 5y+6x=-35 | | -0.1p+0.18p+6=30 | | -4+9.5(1+90)=26.5 | | 3(x+7)+8x=11x-21 | | 8p^2-16p-34=0 | | 3x+5y=144 | | 7x-5=5x+1 | | (5x-30)=180 | | 15a+5= | | -2(m-1)=15 | | 27y-29=462+16 | | 5g(g-4)+48=2g(g+3) | | C=8piefb | | x(x+2)=5x |

Equations solver categories