5n^2-3n-10=5

Simple and best practice solution for 5n^2-3n-10=5 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 5n^2-3n-10=5 equation:


Simplifying
5n2 + -3n + -10 = 5

Reorder the terms:
-10 + -3n + 5n2 = 5

Solving
-10 + -3n + 5n2 = 5

Solving for variable 'n'.

Reorder the terms:
-10 + -5 + -3n + 5n2 = 5 + -5

Combine like terms: -10 + -5 = -15
-15 + -3n + 5n2 = 5 + -5

Combine like terms: 5 + -5 = 0
-15 + -3n + 5n2 = 0

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

Divide each side by '5'.
-3 + -0.6n + n2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -0.6n + 3 + n2 = 0 + 3

Reorder the terms:
-3 + 3 + -0.6n + n2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -0.6n + n2 = 0 + 3
-0.6n + n2 = 0 + 3

Combine like terms: 0 + 3 = 3
-0.6n + n2 = 3

The n term is -0.6n.  Take half its coefficient (-0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
-0.6n + 0.09 + n2 = 3 + 0.09

Reorder the terms:
0.09 + -0.6n + n2 = 3 + 0.09

Combine like terms: 3 + 0.09 = 3.09
0.09 + -0.6n + n2 = 3.09

Factor a perfect square on the left side:
(n + -0.3)(n + -0.3) = 3.09

Calculate the square root of the right side: 1.757839583

Break this problem into two subproblems by setting 
(n + -0.3) equal to 1.757839583 and -1.757839583.

Subproblem 1

n + -0.3 = 1.757839583 Simplifying n + -0.3 = 1.757839583 Reorder the terms: -0.3 + n = 1.757839583 Solving -0.3 + n = 1.757839583 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + n = 1.757839583 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + n = 1.757839583 + 0.3 n = 1.757839583 + 0.3 Combine like terms: 1.757839583 + 0.3 = 2.057839583 n = 2.057839583 Simplifying n = 2.057839583

Subproblem 2

n + -0.3 = -1.757839583 Simplifying n + -0.3 = -1.757839583 Reorder the terms: -0.3 + n = -1.757839583 Solving -0.3 + n = -1.757839583 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + n = -1.757839583 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + n = -1.757839583 + 0.3 n = -1.757839583 + 0.3 Combine like terms: -1.757839583 + 0.3 = -1.457839583 n = -1.457839583 Simplifying n = -1.457839583

Solution

The solution to the problem is based on the solutions from the subproblems. n = {2.057839583, -1.457839583}

See similar equations:

| (5x+8y)(5x+8y)=0 | | 3x=7-6y | | C^2+4c+4= | | 2y-22=-27+3y | | 2m=5m-70 | | 21x^2+181x+50=0 | | x^2-45x+10000=0 | | 14b+12=11b+192 | | 3(3c+4)=8(c-2) | | 61y=30(2y+4) | | 71y=30(2+4) | | 521000+(1+x^1+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11)=9000000 | | 3r/15-5=-2/5-20 | | 24m+120=26m+89 | | 7x+y-9x+11y= | | 25=-3/26y | | 4+3=6x-8+3x-12 | | 8+5n=53 | | 7w-17w=-70 | | 33x+3=6561 | | tsquared=144 | | 12(6t+1)-15=t-(t-2) | | 24x+3=2048 | | log(x)=3.32 | | ln(x)=3.32 | | C=400+0.8y | | 12-48m=396 | | 6*-0.5-2y=4 | | 6(2-8m)=396 | | 0.5=5x+3 | | 7+20x=20x+16 | | 6*0.5-2y=4 |

Equations solver categories