3x^2+6x-17=0

Simple and best practice solution for 3x^2+6x-17=0 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+6x-17=0 equation:


Simplifying
3x2 + 6x + -17 = 0

Reorder the terms:
-17 + 6x + 3x2 = 0

Solving
-17 + 6x + 3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
-5.666666667 + 2x + x2 = 0

Move the constant term to the right:

Add '5.666666667' to each side of the equation.
-5.666666667 + 2x + 5.666666667 + x2 = 0 + 5.666666667

Reorder the terms:
-5.666666667 + 5.666666667 + 2x + x2 = 0 + 5.666666667

Combine like terms: -5.666666667 + 5.666666667 = 0.000000000
0.000000000 + 2x + x2 = 0 + 5.666666667
2x + x2 = 0 + 5.666666667

Combine like terms: 0 + 5.666666667 = 5.666666667
2x + x2 = 5.666666667

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 = 5.666666667 + 1

Reorder the terms:
1 + 2x + x2 = 5.666666667 + 1

Combine like terms: 5.666666667 + 1 = 6.666666667
1 + 2x + x2 = 6.666666667

Factor a perfect square on the left side:
(x + 1)(x + 1) = 6.666666667

Calculate the square root of the right side: 2.581988898

Break this problem into two subproblems by setting 
(x + 1) equal to 2.581988898 and -2.581988898.

Subproblem 1

x + 1 = 2.581988898 Simplifying x + 1 = 2.581988898 Reorder the terms: 1 + x = 2.581988898 Solving 1 + x = 2.581988898 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 = 2.581988898 + -1 Combine like terms: 1 + -1 = 0 0 + x = 2.581988898 + -1 x = 2.581988898 + -1 Combine like terms: 2.581988898 + -1 = 1.581988898 x = 1.581988898 Simplifying x = 1.581988898

Subproblem 2

x + 1 = -2.581988898 Simplifying x + 1 = -2.581988898 Reorder the terms: 1 + x = -2.581988898 Solving 1 + x = -2.581988898 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 = -2.581988898 + -1 Combine like terms: 1 + -1 = 0 0 + x = -2.581988898 + -1 x = -2.581988898 + -1 Combine like terms: -2.581988898 + -1 = -3.581988898 x = -3.581988898 Simplifying x = -3.581988898

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.581988898, -3.581988898}

See similar equations:

| 8(6n+42)=10 | | 3x+4x+2=-19 | | -30=5(T-3)-2t | | 8x-3x+28=158 | | 4y-6=2y+24 | | a=(65*3)+9 | | 4(3f-5)-12f=2(f+5) | | Cos(arctan(4/9)) | | 16-3p=0.67p+5 | | 3a^2b^2+18ab^3+a^2b^2=0 | | 1025=(a*9)+17 | | 4z-16=7 | | x+45=193 | | a=(764*2)+12 | | a-2i=(1+bi)(2-i) | | 3x-26=x+24 | | -3(x-3)-4(x-5)=6 | | x^4-x^3-x^2+x+6=0 | | -7.9q+1.2=-18-1.5q | | 4.5-1.5k=18-3k | | 6q=-7 | | 12x^6-36x^2/-6x^6 | | c=200+0.25x | | X/8=90 | | Y+7.5=9.98 | | 4n-16=34 | | 240000+75x=240000-50x | | z=-3x+4y | | 14x-56=6x-8 | | 240000+75x=50x-240000 | | (81x^2)^(1/2) | | 5x+3=15x-1x |

Equations solver categories