16n^2-4n-15=

Simple and best practice solution for 16n^2-4n-15= 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 16n^2-4n-15= equation:


Simplifying
16n2 + -4n + -15 = 0

Reorder the terms:
-15 + -4n + 16n2 = 0

Solving
-15 + -4n + 16n2 = 0

Solving for variable 'n'.

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

Divide each side by '16'.
-0.9375 + -0.25n + n2 = 0

Move the constant term to the right:

Add '0.9375' to each side of the equation.
-0.9375 + -0.25n + 0.9375 + n2 = 0 + 0.9375

Reorder the terms:
-0.9375 + 0.9375 + -0.25n + n2 = 0 + 0.9375

Combine like terms: -0.9375 + 0.9375 = 0.0000
0.0000 + -0.25n + n2 = 0 + 0.9375
-0.25n + n2 = 0 + 0.9375

Combine like terms: 0 + 0.9375 = 0.9375
-0.25n + n2 = 0.9375

The n term is -0.25n.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25n + 0.015625 + n2 = 0.9375 + 0.015625

Reorder the terms:
0.015625 + -0.25n + n2 = 0.9375 + 0.015625

Combine like terms: 0.9375 + 0.015625 = 0.953125
0.015625 + -0.25n + n2 = 0.953125

Factor a perfect square on the left side:
(n + -0.125)(n + -0.125) = 0.953125

Calculate the square root of the right side: 0.976281209

Break this problem into two subproblems by setting 
(n + -0.125) equal to 0.976281209 and -0.976281209.

Subproblem 1

n + -0.125 = 0.976281209 Simplifying n + -0.125 = 0.976281209 Reorder the terms: -0.125 + n = 0.976281209 Solving -0.125 + n = 0.976281209 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + n = 0.976281209 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + n = 0.976281209 + 0.125 n = 0.976281209 + 0.125 Combine like terms: 0.976281209 + 0.125 = 1.101281209 n = 1.101281209 Simplifying n = 1.101281209

Subproblem 2

n + -0.125 = -0.976281209 Simplifying n + -0.125 = -0.976281209 Reorder the terms: -0.125 + n = -0.976281209 Solving -0.125 + n = -0.976281209 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + n = -0.976281209 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + n = -0.976281209 + 0.125 n = -0.976281209 + 0.125 Combine like terms: -0.976281209 + 0.125 = -0.851281209 n = -0.851281209 Simplifying n = -0.851281209

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.101281209, -0.851281209}

See similar equations:

| 3t+5=-5+4t | | cos(65)=16/z | | (r^2)-2r+5=0 | | -9u+6=-8u | | (r^2)-2y+5=0 | | 20x-7y=-35 | | -9u+5=-8u | | xsquared+19x-72=0 | | 9f=-8+8f | | (x-2)+ln(x+1)=ln(x-3) | | X/18-1=2 | | 2(m+2.5)= | | -10a=8 | | 6x+8(1.25)=19 | | g(x)=2x^2+8x+5 | | -5x+2=-58 | | -24=3x+5y-2 | | 2/15x2/3 | | 34=2x+1 | | 8k-6k-3= | | X-y-4z^2=0 | | 6=2c-2 | | -7x+9=-75 | | 6/5y=-13 | | -6=2(4-x) | | 3x+2x-10=20 | | 12y-9=7y+26 | | 2p^2-12p+13=0 | | 9.6=u^3 | | m×3/8=-2 | | 5x-7-3x=-15 | | 3-(3t)=5t-7 |

Equations solver categories