3x^2+15x=18

Simple and best practice solution for 3x^2+15x=18 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 3x^2+15x=18 equation:


Simplifying
3x2 + 15x = 18

Reorder the terms:
15x + 3x2 = 18

Solving
15x + 3x2 = 18

Solving for variable 'x'.

Reorder the terms:
-18 + 15x + 3x2 = 18 + -18

Combine like terms: 18 + -18 = 0
-18 + 15x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-6 + 5x + x2) = 0

Factor a trinomial.
3((-6 + -1x)(1 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-6 + -1x)' equal to zero and attempt to solve: Simplifying -6 + -1x = 0 Solving -6 + -1x = 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 + -1x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1x = 0 + 6 -1x = 0 + 6 Combine like terms: 0 + 6 = 6 -1x = 6 Divide each side by '-1'. x = -6 Simplifying x = -6

Subproblem 2

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

Solution

x = {-6, 1}

See similar equations:

| 4x^2+20x=56 | | (4x-y^2)(x+2y^2)= | | (x+2y^2)(3x+2y^2)= | | (8x-4av^2)(x+av^2)= | | (s+2t^2)(2s-2t^2)= | | (u-4vy)(u+vy)= | | 7x-22=180 | | (u-7nx^2)(u+nx^2)= | | 7x+22=180 | | (2v^2+2sy)(2v^2+sy)= | | (2x-7y)(x+y)= | | (4y+av)(y-2av)= | | (m+5)(m^2-4)= | | (2b+c)(3b+2c)= | | -15=3x-3 | | (4x-3)(2x-1)= | | 20=x/(0.5+6x) | | 3=x/(0.5+6x) | | 3=0.5x+(0.5x+6) | | 7-4[3-(4y-5)]= | | (2x-2y)(x+2y)= | | 7x+8=9x-8 | | (y-tx)(8y-tx)= | | (x+y)(4x-5y)= | | 8x-3[5-(7-6x)]= | | (x+y^2)(x-5y^2)= | | (x-nu)*(9x+3nu)= | | (y+2bx^2)*(2y-3bx^2)= | | 6y-2x=-8 | | 4x-4+3x+12=6x+3 | | 3x+17+x+53=180 | | 5x^2-20x-160= |

Equations solver categories