5x(9x-3)=4

Simple and best practice solution for 5x(9x-3)=4 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(9x-3)=4 equation:


Simplifying
5x(9x + -3) = 4

Reorder the terms:
5x(-3 + 9x) = 4
(-3 * 5x + 9x * 5x) = 4
(-15x + 45x2) = 4

Solving
-15x + 45x2 = 4

Solving for variable 'x'.

Reorder the terms:
-4 + -15x + 45x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + -15x + 45x2 = 0

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

Divide each side by '45'.
-0.08888888889 + -0.3333333333x + x2 = 0

Move the constant term to the right:

Add '0.08888888889' to each side of the equation.
-0.08888888889 + -0.3333333333x + 0.08888888889 + x2 = 0 + 0.08888888889

Reorder the terms:
-0.08888888889 + 0.08888888889 + -0.3333333333x + x2 = 0 + 0.08888888889

Combine like terms: -0.08888888889 + 0.08888888889 = 0.00000000000
0.00000000000 + -0.3333333333x + x2 = 0 + 0.08888888889
-0.3333333333x + x2 = 0 + 0.08888888889

Combine like terms: 0 + 0.08888888889 = 0.08888888889
-0.3333333333x + x2 = 0.08888888889

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 = 0.08888888889 + 0.02777777779

Reorder the terms:
0.02777777779 + -0.3333333333x + x2 = 0.08888888889 + 0.02777777779

Combine like terms: 0.08888888889 + 0.02777777779 = 0.11666666668
0.02777777779 + -0.3333333333x + x2 = 0.11666666668

Factor a perfect square on the left side:
(x + -0.1666666667)(x + -0.1666666667) = 0.11666666668

Calculate the square root of the right side: 0.341565026

Break this problem into two subproblems by setting 
(x + -0.1666666667) equal to 0.341565026 and -0.341565026.

Subproblem 1

x + -0.1666666667 = 0.341565026 Simplifying x + -0.1666666667 = 0.341565026 Reorder the terms: -0.1666666667 + x = 0.341565026 Solving -0.1666666667 + x = 0.341565026 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 = 0.341565026 + 0.1666666667 Combine like terms: -0.1666666667 + 0.1666666667 = 0.0000000000 0.0000000000 + x = 0.341565026 + 0.1666666667 x = 0.341565026 + 0.1666666667 Combine like terms: 0.341565026 + 0.1666666667 = 0.5082316927 x = 0.5082316927 Simplifying x = 0.5082316927

Subproblem 2

x + -0.1666666667 = -0.341565026 Simplifying x + -0.1666666667 = -0.341565026 Reorder the terms: -0.1666666667 + x = -0.341565026 Solving -0.1666666667 + x = -0.341565026 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 = -0.341565026 + 0.1666666667 Combine like terms: -0.1666666667 + 0.1666666667 = 0.0000000000 0.0000000000 + x = -0.341565026 + 0.1666666667 x = -0.341565026 + 0.1666666667 Combine like terms: -0.341565026 + 0.1666666667 = -0.1748983593 x = -0.1748983593 Simplifying x = -0.1748983593

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.5082316927, -0.1748983593}

See similar equations:

| x^2+44x-215=0 | | 2(x+1)=(8x-9) | | y/5=19 | | 1020/1820= | | 28=4(n-3) | | 4x^4+2x^3-8x^2+x+1=0 | | 4x^3+6x^2-2x-1=0 | | 12-39=6+15 | | 4a+2b=-10 | | -2t=-24 | | 2u+21= | | f(x)=3x^4+4x^3-12x^2 | | sin(x)=-0.95 | | 2y-8=3y-6 | | 5k+13+6k=29-6k-8 | | 0.95x+0.1=0.05x+1 | | 13/60:7/15 | | 14x^2-28x=42 | | 0.07-0.002= | | 4t^5(t-t^2+5t^3)= | | 6/12=x/24 | | 7z-21=-11+5z | | 4t-28=44+8t | | 3/5x-1/3y=-29/5 | | 198.678*6.5= | | log(x+2)=2-log(x-1) | | 8m*4m+3r+2r= | | 2x+3=-x+5 | | 3r+2r= | | 2x+4=-x-4 | | 2x+2=-x-5 | | x^2+40x+53= |

Equations solver categories