-3x^2-23x+30=0

Simple and best practice solution for -3x^2-23x+30=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^2-23x+30=0 equation:


Simplifying
-3x2 + -23x + 30 = 0

Reorder the terms:
30 + -23x + -3x2 = 0

Solving
30 + -23x + -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'.
-10 + 7.666666667x + x2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 7.666666667x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + 7.666666667x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 7.666666667x + x2 = 0 + 10
7.666666667x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
7.666666667x + x2 = 10

The x term is 7.666666667x.  Take half its coefficient (3.833333334).
Square it (14.69444445) and add it to both sides.

Add '14.69444445' to each side of the equation.
7.666666667x + 14.69444445 + x2 = 10 + 14.69444445

Reorder the terms:
14.69444445 + 7.666666667x + x2 = 10 + 14.69444445

Combine like terms: 10 + 14.69444445 = 24.69444445
14.69444445 + 7.666666667x + x2 = 24.69444445

Factor a perfect square on the left side:
(x + 3.833333334)(x + 3.833333334) = 24.69444445

Calculate the square root of the right side: 4.969350506

Break this problem into two subproblems by setting 
(x + 3.833333334) equal to 4.969350506 and -4.969350506.

Subproblem 1

x + 3.833333334 = 4.969350506 Simplifying x + 3.833333334 = 4.969350506 Reorder the terms: 3.833333334 + x = 4.969350506 Solving 3.833333334 + x = 4.969350506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + x = 4.969350506 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + x = 4.969350506 + -3.833333334 x = 4.969350506 + -3.833333334 Combine like terms: 4.969350506 + -3.833333334 = 1.136017172 x = 1.136017172 Simplifying x = 1.136017172

Subproblem 2

x + 3.833333334 = -4.969350506 Simplifying x + 3.833333334 = -4.969350506 Reorder the terms: 3.833333334 + x = -4.969350506 Solving 3.833333334 + x = -4.969350506 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + x = -4.969350506 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + x = -4.969350506 + -3.833333334 x = -4.969350506 + -3.833333334 Combine like terms: -4.969350506 + -3.833333334 = -8.80268384 x = -8.80268384 Simplifying x = -8.80268384

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.136017172, -8.80268384}

See similar equations:

| 2(y+4)=3(y+8) | | 1000*t=9.1736 | | 3s-2s+7=26 | | 11x^2-1=7x^2+2 | | 100x-6x^2=0 | | 45u-38u-6u+5=34 | | -3/3/5= | | y=89 | | -18=33-3h | | k^2+4k+11=10 | | -32b+44b-26b+37b-21b-9=45 | | 2+5*36-100%4= | | A+4(a-3)=15+2a+9 | | 4x-1-3x=-2x+4x | | -4(4z+9)= | | 4+n=43 | | 2x+2(x+5)=18 | | 6b-4(b-4)=22 | | 45/9+8/9= | | 4-2(n+3)=6 | | -14t-10t+22t=40 | | ax-c=bx+dforx | | 5(f+2)=3 | | 8-4(x-3)=12 | | -3+2x+7=3x+7 | | 3(x+2)+10=14 | | 50t-47t-3t+3t=21 | | 11m^2-63=3m+10m^2+7 | | -5z-5(z-5)=5 | | 4(-x+3)=2(-2x+6) | | 4.17n=2.74n-3.29 | | (x+2)(x-1)(3x-6)= |

Equations solver categories