=8x^2-6x-9

Simple and best practice solution for =8x^2-6x-9 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 =8x^2-6x-9 equation:


Simplifying
0 = 8x2 + -6x + -9

Reorder the terms:
0 = -9 + -6x + 8x2

Solving
0 = -9 + -6x + 8x2

Solving for variable 'x'.

Combine like terms: 0 + 9 = 9
9 + 6x + -8x2 = -9 + -6x + 8x2 + 9 + 6x + -8x2

Reorder the terms:
9 + 6x + -8x2 = -9 + 9 + -6x + 6x + 8x2 + -8x2

Combine like terms: -9 + 9 = 0
9 + 6x + -8x2 = 0 + -6x + 6x + 8x2 + -8x2
9 + 6x + -8x2 = -6x + 6x + 8x2 + -8x2

Combine like terms: -6x + 6x = 0
9 + 6x + -8x2 = 0 + 8x2 + -8x2
9 + 6x + -8x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
9 + 6x + -8x2 = 0

Factor a trinomial.
(3 + -2x)(3 + 4x) = 0

Subproblem 1

Set the factor '(3 + -2x)' equal to zero and attempt to solve: Simplifying 3 + -2x = 0 Solving 3 + -2x = 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 + -2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2x = 0 + -3 -2x = 0 + -3 Combine like terms: 0 + -3 = -3 -2x = -3 Divide each side by '-2'. x = 1.5 Simplifying x = 1.5

Subproblem 2

Set the factor '(3 + 4x)' equal to zero and attempt to solve: Simplifying 3 + 4x = 0 Solving 3 + 4x = 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 + 4x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 4x = 0 + -3 4x = 0 + -3 Combine like terms: 0 + -3 = -3 4x = -3 Divide each side by '4'. x = -0.75 Simplifying x = -0.75

Solution

x = {1.5, -0.75}

See similar equations:

| x+x=140 | | x^4+16=17x^2 | | (r^2-8r-12)/(r^4-6r^3) | | 4*17= | | 123=12x-15 | | 3x+10y=-53 | | x^4+x^3-x^2-2x-2=0 | | 2v-5+25*3=120 | | 4x^2-19x-21= | | 4(x-10)=16 | | (x^3/6)-(2x^-4/5) | | 0.17x+0.4(x-1)=0.01(4x-1) | | ln(x)+ln(x+3)=ln(18) | | =-15x^2+4x+4 | | 0.16x+0.7(x-2)=0.01(3x-4) | | 5y+10=6y+10 | | lnx^2+lny=15 | | 0.18x+0.4(x-1)=0.01(5x-1) | | 6x=1944 | | =30x^2-17x-35 | | 2-3z-1=8z | | 2x+1=4x+4 | | -3x+5x+4x=-23 | | x+9=6-4 | | -3x+5x+4x=-21 | | 5+4=-3 | | 2+1.25x=16-x | | 3x^2-15y=0 | | 53=17+x | | 31+4+l=13+l | | 236=w*65 | | 1/5x-1/6(x-5)=6 |

Equations solver categories