2x+5=9x^2+6x+1

Simple and best practice solution for 2x+5=9x^2+6x+1 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 2x+5=9x^2+6x+1 equation:


Simplifying
2x + 5 = 9x2 + 6x + 1

Reorder the terms:
5 + 2x = 9x2 + 6x + 1

Reorder the terms:
5 + 2x = 1 + 6x + 9x2

Solving
5 + 2x = 1 + 6x + 9x2

Solving for variable 'x'.

Reorder the terms:
5 + -1 + 2x + -6x + -9x2 = 1 + 6x + 9x2 + -1 + -6x + -9x2

Combine like terms: 5 + -1 = 4
4 + 2x + -6x + -9x2 = 1 + 6x + 9x2 + -1 + -6x + -9x2

Combine like terms: 2x + -6x = -4x
4 + -4x + -9x2 = 1 + 6x + 9x2 + -1 + -6x + -9x2

Reorder the terms:
4 + -4x + -9x2 = 1 + -1 + 6x + -6x + 9x2 + -9x2

Combine like terms: 1 + -1 = 0
4 + -4x + -9x2 = 0 + 6x + -6x + 9x2 + -9x2
4 + -4x + -9x2 = 6x + -6x + 9x2 + -9x2

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

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

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

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

Move the constant term to the right:

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

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

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

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

The x term is 0.4444444444x.  Take half its coefficient (0.2222222222).
Square it (0.04938271604) and add it to both sides.

Add '0.04938271604' to each side of the equation.
0.4444444444x + 0.04938271604 + x2 = 0.4444444444 + 0.04938271604

Reorder the terms:
0.04938271604 + 0.4444444444x + x2 = 0.4444444444 + 0.04938271604

Combine like terms: 0.4444444444 + 0.04938271604 = 0.49382716044
0.04938271604 + 0.4444444444x + x2 = 0.49382716044

Factor a perfect square on the left side:
(x + 0.2222222222)(x + 0.2222222222) = 0.49382716044

Calculate the square root of the right side: 0.702728369

Break this problem into two subproblems by setting 
(x + 0.2222222222) equal to 0.702728369 and -0.702728369.

Subproblem 1

x + 0.2222222222 = 0.702728369 Simplifying x + 0.2222222222 = 0.702728369 Reorder the terms: 0.2222222222 + x = 0.702728369 Solving 0.2222222222 + x = 0.702728369 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2222222222' to each side of the equation. 0.2222222222 + -0.2222222222 + x = 0.702728369 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + x = 0.702728369 + -0.2222222222 x = 0.702728369 + -0.2222222222 Combine like terms: 0.702728369 + -0.2222222222 = 0.4805061468 x = 0.4805061468 Simplifying x = 0.4805061468

Subproblem 2

x + 0.2222222222 = -0.702728369 Simplifying x + 0.2222222222 = -0.702728369 Reorder the terms: 0.2222222222 + x = -0.702728369 Solving 0.2222222222 + x = -0.702728369 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2222222222' to each side of the equation. 0.2222222222 + -0.2222222222 + x = -0.702728369 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + x = -0.702728369 + -0.2222222222 x = -0.702728369 + -0.2222222222 Combine like terms: -0.702728369 + -0.2222222222 = -0.9249505912 x = -0.9249505912 Simplifying x = -0.9249505912

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4805061468, -0.9249505912}

See similar equations:

| -2(w-5)+6w+1= | | 4(3x+5)=6-2x | | 8+5x=44+x+7 | | 10x+4=12x-6 | | 26=-35 | | -34+6x=-130 | | sin(x)=73 | | -36+6x=-130 | | 108-36= | | 4x-1=12x-46 | | 3a+4b=1 | | -63-9x=82-37x | | 3(x-4)/10=3 | | 512x-x^4= | | -4x^2+5x+3=0 | | 58-3x=6x+16 | | 5x+3=9x-17 | | 3069x-2107=31(99x-70) | | log(a+b)=0 | | -2x^2+7x+8=0 | | f(x)=3x^2-7f(-3) | | x+2x-1=51 | | x+6/1+4=6 | | x+25=2x-1-25 | | 5v=5v | | 4x^2-2=-48 | | 228=1x+2x | | .9x+3.1=4.9 | | 2+7(-6v+6)=-82 | | -5x+1=x+1 | | 102-6x=7x+4 | | 1.8-0.63x=0.7(0.3x+10.9) |

Equations solver categories