a(a+7)=-12

Simple and best practice solution for a(a+7)=-12 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(a+7)=-12 equation:


Simplifying
a(a + 7) = -12

Reorder the terms:
a(7 + a) = -12
(7 * a + a * a) = -12
(7a + a2) = -12

Solving
7a + a2 = -12

Solving for variable 'a'.

Reorder the terms:
12 + 7a + a2 = -12 + 12

Combine like terms: -12 + 12 = 0
12 + 7a + a2 = 0

Factor a trinomial.
(4 + a)(3 + a) = 0

Subproblem 1

Set the factor '(4 + a)' equal to zero and attempt to solve: Simplifying 4 + a = 0 Solving 4 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + a = 0 + -4 a = 0 + -4 Combine like terms: 0 + -4 = -4 a = -4 Simplifying a = -4

Subproblem 2

Set the factor '(3 + a)' equal to zero and attempt to solve: Simplifying 3 + a = 0 Solving 3 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + a = 0 + -3 a = 0 + -3 Combine like terms: 0 + -3 = -3 a = -3 Simplifying a = -3

Solution

a = {-4, -3}

See similar equations:

| 6y+3=10y+8 | | 8t+12=2t+32 | | 3r^2(r-4)=135r | | r^2+2r+15=0 | | c(c+2)=0 | | 3n+7=-8 | | 1.20b-25+b=2b-13-0.4b | | r^2-16= | | 12-6a=18 | | 19+2b=7 | | 4v+23=3 | | 5f+13=3 | | X^8+1=0 | | 3u+6=-12 | | 4s-4=-12 | | 2w-1=-5 | | 9xy+8y-4y^2+9y-2x^2Y= | | 10g-5=-55 | | 6X^2Y= | | 6m+20=2 | | (2)24x^6Y^2= | | 6x+9y=-54 | | 24x^6Y^2= | | x-7.9=-3.4 | | (3x^2+4)(3x^2-4)= | | 9-10x=33-24x | | 72-2x=16x+20 | | v+x=w*w | | 3x-1(-x+2)=10-7x | | (5x)(5x)+17x=-6 | | -35x^2-34x-8= | | 3x(2x-15)=-84 |

Equations solver categories