3x^2+7x-24=0

Simple and best practice solution for 3x^2+7x-24=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+7x-24=0 equation:


Simplifying
3x2 + 7x + -24 = 0

Reorder the terms:
-24 + 7x + 3x2 = 0

Solving
-24 + 7x + 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'.
-8 + 2.333333333x + x2 = 0

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 2.333333333x + 8 + x2 = 0 + 8

Reorder the terms:
-8 + 8 + 2.333333333x + x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 2.333333333x + x2 = 0 + 8
2.333333333x + x2 = 0 + 8

Combine like terms: 0 + 8 = 8
2.333333333x + x2 = 8

The x term is 2.333333333x.  Take half its coefficient (1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
2.333333333x + 1.361111112 + x2 = 8 + 1.361111112

Reorder the terms:
1.361111112 + 2.333333333x + x2 = 8 + 1.361111112

Combine like terms: 8 + 1.361111112 = 9.361111112
1.361111112 + 2.333333333x + x2 = 9.361111112

Factor a perfect square on the left side:
(x + 1.166666667)(x + 1.166666667) = 9.361111112

Calculate the square root of the right side: 3.059593292

Break this problem into two subproblems by setting 
(x + 1.166666667) equal to 3.059593292 and -3.059593292.

Subproblem 1

x + 1.166666667 = 3.059593292 Simplifying x + 1.166666667 = 3.059593292 Reorder the terms: 1.166666667 + x = 3.059593292 Solving 1.166666667 + x = 3.059593292 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + x = 3.059593292 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + x = 3.059593292 + -1.166666667 x = 3.059593292 + -1.166666667 Combine like terms: 3.059593292 + -1.166666667 = 1.892926625 x = 1.892926625 Simplifying x = 1.892926625

Subproblem 2

x + 1.166666667 = -3.059593292 Simplifying x + 1.166666667 = -3.059593292 Reorder the terms: 1.166666667 + x = -3.059593292 Solving 1.166666667 + x = -3.059593292 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.166666667' to each side of the equation. 1.166666667 + -1.166666667 + x = -3.059593292 + -1.166666667 Combine like terms: 1.166666667 + -1.166666667 = 0.000000000 0.000000000 + x = -3.059593292 + -1.166666667 x = -3.059593292 + -1.166666667 Combine like terms: -3.059593292 + -1.166666667 = -4.226259959 x = -4.226259959 Simplifying x = -4.226259959

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.892926625, -4.226259959}

See similar equations:

| 12x^2+144x-5=19 | | 3-2x=4+x | | 0.20x+0.25(70)=35.5 | | x^2-400=100 | | 4x^2+15v+9= | | 3x+8=7x-28 | | x-12+20x^2= | | 2x+6yz=0 | | 12+3(5x-5)=4 | | x-12+6x^2= | | 2p^2-5p-3= | | 2x^3-18x^2y+40xy^2= | | (80-5x)+(4x+10)=80 | | 3x^3-21x^2y+30xy= | | 3x^2+15xy+12y^2= | | x^2-15xy+54y^2= | | 4x^3+48x^2-108x= | | -5-3x=11 | | 49-x^2+(14-x)(7-2x)=(21-x)(7-3x) | | -5x^3+50x^2-45= | | 2x^3+4x^2+14x= | | w^2b^2-wb^2-72b^2= | | -8=3n-5 | | f(-8)=3n | | f(n)=3n | | w^2b^2-wb^2-42b^2= | | n/9=n-24 | | W(x)=2x^3+3x^2-8x-12 | | 6x^2-2=14 | | W(x)=x^3+ax^2+3 | | 2x^2-2=8 | | X+(x+6)=24 |

Equations solver categories