3(x^2+2x)=2x^2-9

Simple and best practice solution for 3(x^2+2x)=2x^2-9 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 3(x^2+2x)=2x^2-9 equation:


Simplifying
3(x2 + 2x) = 2x2 + -9

Reorder the terms:
3(2x + x2) = 2x2 + -9
(2x * 3 + x2 * 3) = 2x2 + -9
(6x + 3x2) = 2x2 + -9

Reorder the terms:
6x + 3x2 = -9 + 2x2

Solving
6x + 3x2 = -9 + 2x2

Solving for variable 'x'.

Reorder the terms:
9 + 6x + 3x2 + -2x2 = -9 + 2x2 + 9 + -2x2

Combine like terms: 3x2 + -2x2 = 1x2
9 + 6x + 1x2 = -9 + 2x2 + 9 + -2x2

Reorder the terms:
9 + 6x + 1x2 = -9 + 9 + 2x2 + -2x2

Combine like terms: -9 + 9 = 0
9 + 6x + 1x2 = 0 + 2x2 + -2x2
9 + 6x + 1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
9 + 6x + 1x2 = 0

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

Subproblem 1

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

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 = {-3, -3}

See similar equations:

| 3,5/X=2.4/4.8 | | 720=35n+125 | | 20n^2+52n=0 | | 3t^3=27t | | 2x+x-12=300 | | -3x^2+4x^2+10-8= | | 12x+9.6y=220 | | 28/[8-(8-40] | | (3x+5)(x-8)=0 | | 3.1x-6.02=3.9 | | 11.85+8.95=47.65 | | 3x^2+5x^2-4x^2+28x-16x+8+7-5= | | 4x^2+6x^2+20x+16x= | | r=3cos(2x) | | p=bmw | | x^2+x^3+y^3= | | 3x=384-x | | 3y+b=8 | | 3y+b= | | -3x^2+4x^2+10-8-7+4= | | 11x^2-24xy+4y^2+15=0 | | -3(4x-1)=-7 | | 512/32 | | 12x^2-46x+14=0 | | 7x+3x+10x= | | 3x(x-14)= | | 12x^2+44x-5=0 | | 57600=(4800*x)-0.2 | | (3x-7)=12 | | 57600=(4800*x)-(20/100) | | 0.45x+0.65y=18.55 | | 4/r-1/2=5/12-3/2r |

Equations solver categories