2n^2-3n-6=0

Simple and best practice solution for 2n^2-3n-6=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^2-3n-6=0 equation:


Simplifying
2n2 + -3n + -6 = 0

Reorder the terms:
-6 + -3n + 2n2 = 0

Solving
-6 + -3n + 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'.
-3 + -1.5n + n2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -1.5n + 3 + n2 = 0 + 3

Reorder the terms:
-3 + 3 + -1.5n + n2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1.5n + n2 = 0 + 3
-1.5n + n2 = 0 + 3

Combine like terms: 0 + 3 = 3
-1.5n + n2 = 3

The n term is -1.5n.  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.
-1.5n + 0.5625 + n2 = 3 + 0.5625

Reorder the terms:
0.5625 + -1.5n + n2 = 3 + 0.5625

Combine like terms: 3 + 0.5625 = 3.5625
0.5625 + -1.5n + n2 = 3.5625

Factor a perfect square on the left side:
(n + -0.75)(n + -0.75) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(n + -0.75) equal to 1.887458609 and -1.887458609.

Subproblem 1

n + -0.75 = 1.887458609 Simplifying n + -0.75 = 1.887458609 Reorder the terms: -0.75 + n = 1.887458609 Solving -0.75 + n = 1.887458609 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + n = 1.887458609 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + n = 1.887458609 + 0.75 n = 1.887458609 + 0.75 Combine like terms: 1.887458609 + 0.75 = 2.637458609 n = 2.637458609 Simplifying n = 2.637458609

Subproblem 2

n + -0.75 = -1.887458609 Simplifying n + -0.75 = -1.887458609 Reorder the terms: -0.75 + n = -1.887458609 Solving -0.75 + n = -1.887458609 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + n = -1.887458609 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + n = -1.887458609 + 0.75 n = -1.887458609 + 0.75 Combine like terms: -1.887458609 + 0.75 = -1.137458609 n = -1.137458609 Simplifying n = -1.137458609

Solution

The solution to the problem is based on the solutions from the subproblems. n = {2.637458609, -1.137458609}

See similar equations:

| (-6)-3b+8b+4= | | 8.25-5/16 | | 6r^2+17r-3=0 | | 5x^2+4=9x | | 9-4/v | | -3/2-2/3=-f/6 | | 34=2(1-8x)+8(6x-4) | | 11x-6=4(3x-1) | | 6(x+2)=12x | | p-c=r | | -4(2x-1)+10=9-3x | | 3xsquared=2x+7 | | 49t^3+5t=42t^2 | | 15m^4+114m^4=189 | | 5x-4-3x+15= | | 5(x^2-1)=50 | | y-7+14y=13 | | 6x-5=3n+10 | | (3+2x)(3.25+2x)=15 | | 3x-12=-12+3x | | c-d=f | | 10x/x-6-60/x-6 | | 27x^2/3 | | =7x+5(1-x) | | 6(q-3)=-4(q+2) | | 5=10z+2(-7/2z-1) | | 2x-2=6x+1 | | 2p=km-t | | 3(x-4)=-1/2(24-6x) | | x-(5-3x)=7x*4 | | -5p=100 | | (19x-5)+(x+7)= |

Equations solver categories