5x^2=-6x+9

Simple and best practice solution for 5x^2=-6x+9 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 5x^2=-6x+9 equation:


Simplifying
5x2 = -6x + 9

Reorder the terms:
5x2 = 9 + -6x

Solving
5x2 = 9 + -6x

Solving for variable 'x'.

Reorder the terms:
-9 + 6x + 5x2 = 9 + -6x + -9 + 6x

Reorder the terms:
-9 + 6x + 5x2 = 9 + -9 + -6x + 6x

Combine like terms: 9 + -9 = 0
-9 + 6x + 5x2 = 0 + -6x + 6x
-9 + 6x + 5x2 = -6x + 6x

Combine like terms: -6x + 6x = 0
-9 + 6x + 5x2 = 0

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

Divide each side by '5'.
-1.8 + 1.2x + x2 = 0

Move the constant term to the right:

Add '1.8' to each side of the equation.
-1.8 + 1.2x + 1.8 + x2 = 0 + 1.8

Reorder the terms:
-1.8 + 1.8 + 1.2x + x2 = 0 + 1.8

Combine like terms: -1.8 + 1.8 = 0.0
0.0 + 1.2x + x2 = 0 + 1.8
1.2x + x2 = 0 + 1.8

Combine like terms: 0 + 1.8 = 1.8
1.2x + x2 = 1.8

The x term is 1.2x.  Take half its coefficient (0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
1.2x + 0.36 + x2 = 1.8 + 0.36

Reorder the terms:
0.36 + 1.2x + x2 = 1.8 + 0.36

Combine like terms: 1.8 + 0.36 = 2.16
0.36 + 1.2x + x2 = 2.16

Factor a perfect square on the left side:
(x + 0.6)(x + 0.6) = 2.16

Calculate the square root of the right side: 1.469693846

Break this problem into two subproblems by setting 
(x + 0.6) equal to 1.469693846 and -1.469693846.

Subproblem 1

x + 0.6 = 1.469693846 Simplifying x + 0.6 = 1.469693846 Reorder the terms: 0.6 + x = 1.469693846 Solving 0.6 + x = 1.469693846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = 1.469693846 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = 1.469693846 + -0.6 x = 1.469693846 + -0.6 Combine like terms: 1.469693846 + -0.6 = 0.869693846 x = 0.869693846 Simplifying x = 0.869693846

Subproblem 2

x + 0.6 = -1.469693846 Simplifying x + 0.6 = -1.469693846 Reorder the terms: 0.6 + x = -1.469693846 Solving 0.6 + x = -1.469693846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = -1.469693846 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = -1.469693846 + -0.6 x = -1.469693846 + -0.6 Combine like terms: -1.469693846 + -0.6 = -2.069693846 x = -2.069693846 Simplifying x = -2.069693846

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.869693846, -2.069693846}

See similar equations:

| 5X+2=3+(-1)+6X | | 7=-8n+9 | | x=bx+cy | | 2m^2-1=9m | | 2x-2(-6x-8)=-124 | | Logx^24-logx^3=3 | | 5.5+2(x-2)=1.5(x+4)+9 | | -100=-4x+4(-x-5) | | 25=(12-x)+(5-x)+x+4 | | p=3x+.84 | | 3d-5=9c+10 | | -26=3x-5(-x-6) | | (-4m-n)-(2m+3n)= | | 108+4u=-20 | | X^2-11x=-c | | 16sin(4x)cos(4x)=0 | | 7(4-x)-(x-14)=0 | | 3x+12=2x-24 | | 165=-2x-3(3x-11) | | 9z=5z+16z | | 165=-2x-9x-33 | | 4n+35=7(n+8) | | 165=-2x-9x-3 | | -5x+(-3)=(-3)+(-5) | | 52=-2x-5(-3x+13) | | 2x^2-4y^2=-8 | | 4x+3y-2x= | | 7(g+15)= | | 6x+6y=42 | | 37=2x-3(3x+4) | | (4b-1)(3b-8)= | | 33-x=(9x-8) |

Equations solver categories