9x^2=4-3x

Simple and best practice solution for 9x^2=4-3x 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 9x^2=4-3x equation:


Simplifying
9x2 = 4 + -3x

Solving
9x2 = 4 + -3x

Solving for variable 'x'.

Reorder the terms:
-4 + 3x + 9x2 = 4 + -3x + -4 + 3x

Reorder the terms:
-4 + 3x + 9x2 = 4 + -4 + -3x + 3x

Combine like terms: 4 + -4 = 0
-4 + 3x + 9x2 = 0 + -3x + 3x
-4 + 3x + 9x2 = -3x + 3x

Combine like terms: -3x + 3x = 0
-4 + 3x + 9x2 = 0

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

Divide each side by '9'.
-0.4444444444 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '0.4444444444' to each side of the equation.
-0.4444444444 + 0.3333333333x + 0.4444444444 + x2 = 0 + 0.4444444444

Reorder the terms:
-0.4444444444 + 0.4444444444 + 0.3333333333x + x2 = 0 + 0.4444444444

Combine like terms: -0.4444444444 + 0.4444444444 = 0.0000000000
0.0000000000 + 0.3333333333x + x2 = 0 + 0.4444444444
0.3333333333x + x2 = 0 + 0.4444444444

Combine like terms: 0 + 0.4444444444 = 0.4444444444
0.3333333333x + x2 = 0.4444444444

The x term is 0.3333333333x.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333x + 0.02777777779 + x2 = 0.4444444444 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333x + x2 = 0.4444444444 + 0.02777777779

Combine like terms: 0.4444444444 + 0.02777777779 = 0.47222222219
0.02777777779 + 0.3333333333x + x2 = 0.47222222219

Factor a perfect square on the left side:
(x + 0.1666666667)(x + 0.1666666667) = 0.47222222219

Calculate the square root of the right side: 0.687184271

Break this problem into two subproblems by setting 
(x + 0.1666666667) equal to 0.687184271 and -0.687184271.

Subproblem 1

x + 0.1666666667 = 0.687184271 Simplifying x + 0.1666666667 = 0.687184271 Reorder the terms: 0.1666666667 + x = 0.687184271 Solving 0.1666666667 + x = 0.687184271 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = 0.687184271 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = 0.687184271 + -0.1666666667 x = 0.687184271 + -0.1666666667 Combine like terms: 0.687184271 + -0.1666666667 = 0.5205176043 x = 0.5205176043 Simplifying x = 0.5205176043

Subproblem 2

x + 0.1666666667 = -0.687184271 Simplifying x + 0.1666666667 = -0.687184271 Reorder the terms: 0.1666666667 + x = -0.687184271 Solving 0.1666666667 + x = -0.687184271 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + x = -0.687184271 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + x = -0.687184271 + -0.1666666667 x = -0.687184271 + -0.1666666667 Combine like terms: -0.687184271 + -0.1666666667 = -0.8538509377 x = -0.8538509377 Simplifying x = -0.8538509377

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.5205176043, -0.8538509377}

See similar equations:

| 105+108+72+x=180 | | X+.05x=1050 | | 18x^2-288x=0 | | 98+48x=32x | | 5z+3+3z= | | a=10+2*40 | | 5*x=8 | | 2y^2+y=8 | | 36+x+x=90 | | 3x+(2y-7x)= | | 10x-4=3(x-2)+9 | | 70=10+2b | | a=10+2*20 | | 28+50+x=180 | | Y=2x+7x+3 | | 3(x+2)+7=2(x+15) | | a=10+2*10 | | 24(3x)+9+6x=54 | | 24(3x)+9+6y=54 | | 4n-3=-5 | | 18-5x=-12 | | 1/5x-4=-1 | | =n^2+c+11n | | 72x+6x=54-9 | | 5a+3b+c= | | 0.2m=10 | | 59-9*5=14 | | 3x+12=108 | | 22-1/2÷5 | | 5d=10.5 | | 5(x-8)-10=0 | | -6x+13-5y+9x-17= |

Equations solver categories