a^2+3a=40

Simple and best practice solution for a^2+3a=40 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 a^2+3a=40 equation:


Simplifying
a2 + 3a = 40

Reorder the terms:
3a + a2 = 40

Solving
3a + a2 = 40

Solving for variable 'a'.

Reorder the terms:
-40 + 3a + a2 = 40 + -40

Combine like terms: 40 + -40 = 0
-40 + 3a + a2 = 0

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

Subproblem 1

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

Subproblem 2

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

Solution

a = {-8, 5}

See similar equations:

| 4t+3s=190 | | 223-7x=38x+18 | | y^2+2y=63 | | 108-4x=4x+20 | | -2612x=9-9x | | y^2=81 | | 4x+18=12x-46 | | p^2-16=0 | | 6v^7+20v^6-16v^5= | | x^2+8x=30 | | 8b+15=5b+1 | | 8y+y^2+15=0 | | 9x+x^2+20=0 | | 2(y-9)+3(y-4)=5 | | 12-f=3(4-f) | | 2a+8=4a-2 | | 13d-5=3(3d+7) | | 2+5c=2(2c-2) | | 5(2t-7)=25 | | 2(3p+1)=4p+3 | | x^2+2x+5= | | 4(y+3)=3y+7 | | (2x^5w^2)(6w^8)(4x)= | | 6-3(2k+4)=18 | | 3(2x-1)=3(n+3) | | 3(3t+1)=0 | | n*5=36*-n | | 125c^3+8= | | 6m+2(2)-7=0 | | 22=7-3s | | 3(7-2x)+2=3(4x-1) | | 6v^2+12v+52= |

Equations solver categories