-7x^2-18x+9=0

Simple and best practice solution for -7x^2-18x+9=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 -7x^2-18x+9=0 equation:


Simplifying
-7x2 + -18x + 9 = 0

Reorder the terms:
9 + -18x + -7x2 = 0

Solving
9 + -18x + -7x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(3 + -7x)(3 + x) = 0

Subproblem 1

Set the factor '(3 + -7x)' equal to zero and attempt to solve: Simplifying 3 + -7x = 0 Solving 3 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x = 0 + -3 -7x = 0 + -3 Combine like terms: 0 + -3 = -3 -7x = -3 Divide each side by '-7'. x = 0.4285714286 Simplifying x = 0.4285714286

Subproblem 2

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Solution

x = {0.4285714286, -3}

See similar equations:

| 4x+77=11x-7 | | 2(28t+20)=8(2t+40) | | y(6y)+13y+5=0 | | 4w+4=52 | | 4d(d)+19d-5=0 | | 295-u=100 | | -3(2w-3)+3w=3(w+6) | | 8y^2+9y=0 | | x(x)-10x+21=0 | | (X+4)8=49 | | X=1/2(170-120) | | 61-4x=7-10x | | 18x+90=-57x-60 | | 2y^2+12y-x+6=0 | | (1-3i)(1+3i)=0 | | 10x=0.69 | | c(c)+8c+15=0 | | x^2+y^2=172 | | Ln(x-4)+2=8 | | P+14=40 | | -4(2t+7)=-68 | | 48-x^2=x^2 | | .25x+1=-3x+-9 | | 11x(x)-234x-720=0 | | 8+11x=-32-x | | .25x+1=-3x+3 | | 4=e+1 | | 2x^2-2=3x^2-9 | | 11x(x)-234-720=0 | | [(7t*7t)-2t+6]+[(-3t*-3t)+t+4]= | | 3(f-5)=-21 | | (-y+5.3)=(7.2y-9) |

Equations solver categories