6x^2+12x=15

Simple and best practice solution for 6x^2+12x=15 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 6x^2+12x=15 equation:


Simplifying
6x2 + 12x = 15

Reorder the terms:
12x + 6x2 = 15

Solving
12x + 6x2 = 15

Solving for variable 'x'.

Reorder the terms:
-15 + 12x + 6x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-15 + 12x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-5 + 4x + 2x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-5 + 4x + 2x2)' equal to zero and attempt to solve: Simplifying -5 + 4x + 2x2 = 0 Solving -5 + 4x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -2.5 + 2x + x2 = 0 Move the constant term to the right: Add '2.5' to each side of the equation. -2.5 + 2x + 2.5 + x2 = 0 + 2.5 Reorder the terms: -2.5 + 2.5 + 2x + x2 = 0 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + 2x + x2 = 0 + 2.5 2x + x2 = 0 + 2.5 Combine like terms: 0 + 2.5 = 2.5 2x + x2 = 2.5 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 2.5 + 1 Reorder the terms: 1 + 2x + x2 = 2.5 + 1 Combine like terms: 2.5 + 1 = 3.5 1 + 2x + x2 = 3.5 Factor a perfect square on the left side: (x + 1)(x + 1) = 3.5 Calculate the square root of the right side: 1.870828693 Break this problem into two subproblems by setting (x + 1) equal to 1.870828693 and -1.870828693.

Subproblem 1

x + 1 = 1.870828693 Simplifying x + 1 = 1.870828693 Reorder the terms: 1 + x = 1.870828693 Solving 1 + x = 1.870828693 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.870828693 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.870828693 + -1 x = 1.870828693 + -1 Combine like terms: 1.870828693 + -1 = 0.870828693 x = 0.870828693 Simplifying x = 0.870828693

Subproblem 2

x + 1 = -1.870828693 Simplifying x + 1 = -1.870828693 Reorder the terms: 1 + x = -1.870828693 Solving 1 + x = -1.870828693 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.870828693 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.870828693 + -1 x = -1.870828693 + -1 Combine like terms: -1.870828693 + -1 = -2.870828693 x = -2.870828693 Simplifying x = -2.870828693

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.870828693, -2.870828693}

Solution

x = {0.870828693, -2.870828693}

See similar equations:

| x^2+3x-150=0 | | 30(p+140)= | | 6x^4-24x^3+4x^2-16x=0 | | 6(5+c)=5(c-2) | | 28-12=4(x-3) | | 3y+4=3(6-7y) | | .33+.66m=.66m-.66 | | 8x-16y-5x-12y= | | .66x+.33=-1.6 | | 4(4k+1)-8(k-1)=3(2k+2)-2 | | .2x+.2=.4x-1.4 | | 3(x)=508 | | 2x+3=x^2-2x+1 | | .5(x+7)-2=7 | | 4p+9=12 | | D^2-2D=15 | | 7x+3x+12= | | 6x+4=-5+3x+24 | | (0.6x-3)(2x+1)=0 | | -9(x-2)-20=-2 | | 4(4k+1)-8(k-1)=3(25k+2)-2 | | 10m+100=15m | | 11u-u-14+13u= | | -44x=126 | | -44-x=126 | | x-44=126 | | 2(x+6)=2(x-4) | | 8(y-2)=-2(5+y) | | 4y+3=1 | | 2(x+6)=(x-4) | | 9y-2=(2y+4) | | x(x)-4x+4=0 |

Equations solver categories