n^2-4n-10=0

Simple and best practice solution for n^2-4n-10=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 n^2-4n-10=0 equation:


Simplifying
n2 + -4n + -10 = 0

Reorder the terms:
-10 + -4n + n2 = 0

Solving
-10 + -4n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -4n + 10 + n2 = 0 + 10

Reorder the terms:
-10 + 10 + -4n + n2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -4n + n2 = 0 + 10
-4n + n2 = 0 + 10

Combine like terms: 0 + 10 = 10
-4n + n2 = 10

The n term is -4n.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4n + 4 + n2 = 10 + 4

Reorder the terms:
4 + -4n + n2 = 10 + 4

Combine like terms: 10 + 4 = 14
4 + -4n + n2 = 14

Factor a perfect square on the left side:
(n + -2)(n + -2) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(n + -2) equal to 3.741657387 and -3.741657387.

Subproblem 1

n + -2 = 3.741657387 Simplifying n + -2 = 3.741657387 Reorder the terms: -2 + n = 3.741657387 Solving -2 + n = 3.741657387 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + n = 3.741657387 + 2 Combine like terms: -2 + 2 = 0 0 + n = 3.741657387 + 2 n = 3.741657387 + 2 Combine like terms: 3.741657387 + 2 = 5.741657387 n = 5.741657387 Simplifying n = 5.741657387

Subproblem 2

n + -2 = -3.741657387 Simplifying n + -2 = -3.741657387 Reorder the terms: -2 + n = -3.741657387 Solving -2 + n = -3.741657387 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + n = -3.741657387 + 2 Combine like terms: -2 + 2 = 0 0 + n = -3.741657387 + 2 n = -3.741657387 + 2 Combine like terms: -3.741657387 + 2 = -1.741657387 n = -1.741657387 Simplifying n = -1.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. n = {5.741657387, -1.741657387}

See similar equations:

| 5x+5=3x+11 | | 8/y+13/y=3 | | 2x^3-128a^2x+32x^2+128x=0 | | 6x-2y+8=0 | | 4(5p-4)-[3(4p-3)+2]= | | 5y+8=10-10y | | 2/3*15/16 | | 1/5a-1/5=-5 | | 2.3*y=56.626 | | -7(x+4)+4x+7=5x+8 | | (1/5x)-(1/8x)+(1/40x)=15 | | 9x-(6x+2)= | | 20-3x=3x+58 | | 6z+6z=24 | | (5/3)x=20 | | 16x-5/8x+3=8/x | | 0.5(40)+0.8x=0.7(40+x) | | 5z^2-22z-15=0 | | X-5/3 | | 50*6/10-6+36 | | x/-3=13 | | (16x-5/8x+3) | | -1/3*1-4 | | 14(t-2)+4t=6(3t+2)-9 | | r^2-10r+16= | | -1/3*2-4 | | 5/6d=15 | | X^2+y^2=12.25 | | 3x^3-48a^2x+18x^2+27x=0 | | 3/2*2-8 | | 0.08x+0.09(9000-x)=500 | | 5(15/13)+1/5(15/13) |

Equations solver categories