0=7x^3-8x^2-12x

Simple and best practice solution for 0=7x^3-8x^2-12x 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=7x^3-8x^2-12x equation:


Simplifying
0 = 7x3 + -8x2 + -12x

Reorder the terms:
0 = -12x + -8x2 + 7x3

Solving
0 = -12x + -8x2 + 7x3

Solving for variable 'x'.
Remove the zero:
12x + 8x2 + -7x3 = -12x + -8x2 + 7x3 + 12x + 8x2 + -7x3

Reorder the terms:
12x + 8x2 + -7x3 = -12x + 12x + -8x2 + 8x2 + 7x3 + -7x3

Combine like terms: -12x + 12x = 0
12x + 8x2 + -7x3 = 0 + -8x2 + 8x2 + 7x3 + -7x3
12x + 8x2 + -7x3 = -8x2 + 8x2 + 7x3 + -7x3

Combine like terms: -8x2 + 8x2 = 0
12x + 8x2 + -7x3 = 0 + 7x3 + -7x3
12x + 8x2 + -7x3 = 7x3 + -7x3

Combine like terms: 7x3 + -7x3 = 0
12x + 8x2 + -7x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(12 + 8x + -7x2) = 0

Factor a trinomial.
x((2 + -1x)(6 + 7x)) = 0

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Subproblem 3

Set the factor '(6 + 7x)' equal to zero and attempt to solve: Simplifying 6 + 7x = 0 Solving 6 + 7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + 7x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + 7x = 0 + -6 7x = 0 + -6 Combine like terms: 0 + -6 = -6 7x = -6 Divide each side by '7'. x = -0.8571428571 Simplifying x = -0.8571428571

Solution

x = {0, 2, -0.8571428571}

See similar equations:

| 4x^3-16x^2+100x-8=0 | | 5(-7k+1)-8(k-7)=-25 | | -3x^2+2x+6=-15 | | 5(3-3x)=-7x+31 | | 6(r-4)=-19+5r | | 8+4s-16= | | 2000*100-5x*x/100 | | 5(3-3x)=-7x+32 | | 2x^2+8x+6=16 | | -8+v=-8(1+8v) | | 30+4y=180 | | 4r+2(3+5r)=-90 | | 7*9=(7*10)7 | | -2x+4=11-2x | | 2x^3y+6x^2y^2-56xy^3= | | 7s^2=-13-28s | | -44-w/3 | | 9x^2-21=175 | | 1.5p=45 | | 3x+6(-6x-2)=17-4x | | 1x^2+21=28 | | 2*x=81 | | 3a+5=7(a-1) | | x+(.03*x)=78000 | | 5/8y=35 | | 5(3v-3)-4=71 | | P=b+2a+6 | | 3x^2-42x+42= | | 2/5y-8=9-3/4y | | =4x(5x-2) | | 2(5u-8)=62 | | V+2=-12+3v |

Equations solver categories