2n^2-9n+3=0

Simple and best practice solution for 2n^2-9n+3=0 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 2n^2-9n+3=0 equation:


Simplifying
2n2 + -9n + 3 = 0

Reorder the terms:
3 + -9n + 2n2 = 0

Solving
3 + -9n + 2n2 = 0

Solving for variable 'n'.

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

Divide each side by '2'.
1.5 + -4.5n + n2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -4.5n + -1.5 + n2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -4.5n + n2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -4.5n + n2 = 0 + -1.5
-4.5n + n2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-4.5n + n2 = -1.5

The n term is -4.5n.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5n + 5.0625 + n2 = -1.5 + 5.0625

Reorder the terms:
5.0625 + -4.5n + n2 = -1.5 + 5.0625

Combine like terms: -1.5 + 5.0625 = 3.5625
5.0625 + -4.5n + n2 = 3.5625

Factor a perfect square on the left side:
(n + -2.25)(n + -2.25) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(n + -2.25) equal to 1.887458609 and -1.887458609.

Subproblem 1

n + -2.25 = 1.887458609 Simplifying n + -2.25 = 1.887458609 Reorder the terms: -2.25 + n = 1.887458609 Solving -2.25 + n = 1.887458609 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + n = 1.887458609 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + n = 1.887458609 + 2.25 n = 1.887458609 + 2.25 Combine like terms: 1.887458609 + 2.25 = 4.137458609 n = 4.137458609 Simplifying n = 4.137458609

Subproblem 2

n + -2.25 = -1.887458609 Simplifying n + -2.25 = -1.887458609 Reorder the terms: -2.25 + n = -1.887458609 Solving -2.25 + n = -1.887458609 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + n = -1.887458609 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + n = -1.887458609 + 2.25 n = -1.887458609 + 2.25 Combine like terms: -1.887458609 + 2.25 = 0.362541391 n = 0.362541391 Simplifying n = 0.362541391

Solution

The solution to the problem is based on the solutions from the subproblems. n = {4.137458609, 0.362541391}

See similar equations:

| 10x+(-5)=30 | | 10x=4x+20+x | | 7.14-g=3.24 | | -8h=0 | | 4c^2+5c+2c= | | 3w-6=4w-48 | | W/-5-4=-4 | | 11x+8=6x+2 | | 0.5x+2x=90 | | 2/3(18)+6=18 | | 6.9=8.9-0.4x | | a+b-4a-b= | | -5/6w=1/3 | | -16=m+12 | | x-2(3-2x)=0 | | 18+2d^3+d+3d= | | c/-4+7=5 | | 5(x-5)=x-37 | | 3(2x+4)+6= | | 16-2.4x=-8 | | x(x+2)=378 | | 8(y+2)=4(y-3) | | 47-17=5(x-8) | | 6(x+5)=7(x-8) | | 8x=10x-4x+7 | | 9x/y | | 3.5n-1=20 | | -2y+1=-17 | | 3(x+2)-2(x-7)=0 | | 1q-11=2q+4 | | 8+h=0 | | m+2m+2m+16+m-10=150 |

Equations solver categories