6x^2=4-9x

Simple and best practice solution for 6x^2=4-9x 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=4-9x equation:


Simplifying
6x2 = 4 + -9x

Solving
6x2 = 4 + -9x

Solving for variable 'x'.

Reorder the terms:
-4 + 9x + 6x2 = 4 + -9x + -4 + 9x

Reorder the terms:
-4 + 9x + 6x2 = 4 + -4 + -9x + 9x

Combine like terms: 4 + -4 = 0
-4 + 9x + 6x2 = 0 + -9x + 9x
-4 + 9x + 6x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
-4 + 9x + 6x2 = 0

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

Divide each side by '6'.
-0.6666666667 + 1.5x + x2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + 1.5x + 0.6666666667 + x2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + 1.5x + x2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + 1.5x + x2 = 0 + 0.6666666667
1.5x + x2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
1.5x + x2 = 0.6666666667

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 0.6666666667 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 0.6666666667 + 0.5625

Combine like terms: 0.6666666667 + 0.5625 = 1.2291666667
0.5625 + 1.5x + x2 = 1.2291666667

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 1.2291666667

Calculate the square root of the right side: 1.108677891

Break this problem into two subproblems by setting 
(x + 0.75) equal to 1.108677891 and -1.108677891.

Subproblem 1

x + 0.75 = 1.108677891 Simplifying x + 0.75 = 1.108677891 Reorder the terms: 0.75 + x = 1.108677891 Solving 0.75 + x = 1.108677891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 1.108677891 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 1.108677891 + -0.75 x = 1.108677891 + -0.75 Combine like terms: 1.108677891 + -0.75 = 0.358677891 x = 0.358677891 Simplifying x = 0.358677891

Subproblem 2

x + 0.75 = -1.108677891 Simplifying x + 0.75 = -1.108677891 Reorder the terms: 0.75 + x = -1.108677891 Solving 0.75 + x = -1.108677891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -1.108677891 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -1.108677891 + -0.75 x = -1.108677891 + -0.75 Combine like terms: -1.108677891 + -0.75 = -1.858677891 x = -1.858677891 Simplifying x = -1.858677891

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.358677891, -1.858677891}

See similar equations:

| 3+13z-1=5z+72-2z | | 4a+35=7 | | x^6-189x^3+8000=0 | | 7y-9=8y-4 | | 9t+18t=54 | | 4x+22=3 | | 22=6x+10 | | 22=2(2x+5)+2x | | 3x-6=54 | | 8x^2-23x=0 | | 4x^2+32x+16=0 | | 6-(6k+1)=2[(5k-3)-(k-2)] | | 5(2+6)=-4(-5-2x)+3x | | 5(2+6)=-4(-5-2x)3x | | 6t=-50 | | 14x+x^2=24 | | 25s^2+90s=-81 | | 25s+90s=-81 | | c^2=36-5c | | 7x+9.3=39.4 | | -7(3b+2)+(22b-8)=0 | | 23x^2-28x=0 | | -7(3b+2)+(22b)-8=0 | | 484=2(5w)+2w | | 0.029x-20=0.06-0.01(x+1) | | 8(4x-5)=4(8x+1) | | -(5y+4)-(-4y-8)=0 | | (x-3)(4x+9)=0 | | 1.6q-4.7-2.4q=-1.8q-2.7 | | x-62.9=38.5 | | 8(3x-8)=4(6x+9) | | 9+11n-7=7n+83-5n |

Equations solver categories