n^2+4n-40=7n

Simple and best practice solution for n^2+4n-40=7n 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-40=7n equation:


Simplifying
n2 + 4n + -40 = 7n

Reorder the terms:
-40 + 4n + n2 = 7n

Solving
-40 + 4n + n2 = 7n

Solving for variable 'n'.

Reorder the terms:
-40 + 4n + -7n + n2 = 7n + -7n

Combine like terms: 4n + -7n = -3n
-40 + -3n + n2 = 7n + -7n

Combine like terms: 7n + -7n = 0
-40 + -3n + n2 = 0

Factor a trinomial.
(-5 + -1n)(8 + -1n) = 0

Subproblem 1

Set the factor '(-5 + -1n)' equal to zero and attempt to solve: Simplifying -5 + -1n = 0 Solving -5 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1n = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1n = 0 + 5 -1n = 0 + 5 Combine like terms: 0 + 5 = 5 -1n = 5 Divide each side by '-1'. n = -5 Simplifying n = -5

Subproblem 2

Set the factor '(8 + -1n)' equal to zero and attempt to solve: Simplifying 8 + -1n = 0 Solving 8 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1n = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1n = 0 + -8 -1n = 0 + -8 Combine like terms: 0 + -8 = -8 -1n = -8 Divide each side by '-1'. n = 8 Simplifying n = 8

Solution

n = {-5, 8}

See similar equations:

| 0.25(3x-2)-2.5(2x+4)= | | 6(3x-2)-17x=1 | | v=-8(4) | | 48+112x^2=55 | | 5[7x-8(1+x)]= | | 2(5g+7)=7g+11 | | 28=2(p+6) | | 4x=3y+12 | | 10-6x^2=-374 | | y=x-2-2 | | (3/x-8)+(2/x-5)=(4/x^2-13x+40) | | -2/3(x-3)-x=8 | | 12x+8=0 | | 3a-16=-a | | 2x^2=24+32 | | 250=6z+c | | 6x^2+3=297 | | 57=5-4x | | 9-9x=34-16x | | 3(n-3)=-15 | | -7r-6=106 | | 18-6t=4-4t | | -47-2x=9+10x | | 2/3x-5=17 | | -9-5b=11 | | y=21+4 | | 2-(a+6)=-22 | | 2/9x+2=10x-4 | | -7=-7r | | k^2-5k-16=8 | | 3/4v-6=-1/4v+5 | | 3y-7+y+47=7y+40-5y |

Equations solver categories