a^2+8a-6=0

Simple and best practice solution for a^2+8a-6=0 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+8a-6=0 equation:


Simplifying
a2 + 8a + -6 = 0

Reorder the terms:
-6 + 8a + a2 = 0

Solving
-6 + 8a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 8a + 6 + a2 = 0 + 6

Reorder the terms:
-6 + 6 + 8a + a2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 8a + a2 = 0 + 6
8a + a2 = 0 + 6

Combine like terms: 0 + 6 = 6
8a + a2 = 6

The a term is 8a.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8a + 16 + a2 = 6 + 16

Reorder the terms:
16 + 8a + a2 = 6 + 16

Combine like terms: 6 + 16 = 22
16 + 8a + a2 = 22

Factor a perfect square on the left side:
(a + 4)(a + 4) = 22

Calculate the square root of the right side: 4.69041576

Break this problem into two subproblems by setting 
(a + 4) equal to 4.69041576 and -4.69041576.

Subproblem 1

a + 4 = 4.69041576 Simplifying a + 4 = 4.69041576 Reorder the terms: 4 + a = 4.69041576 Solving 4 + a = 4.69041576 Solving for variable 'a'. 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 = 4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + a = 4.69041576 + -4 a = 4.69041576 + -4 Combine like terms: 4.69041576 + -4 = 0.69041576 a = 0.69041576 Simplifying a = 0.69041576

Subproblem 2

a + 4 = -4.69041576 Simplifying a + 4 = -4.69041576 Reorder the terms: 4 + a = -4.69041576 Solving 4 + a = -4.69041576 Solving for variable 'a'. 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 = -4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + a = -4.69041576 + -4 a = -4.69041576 + -4 Combine like terms: -4.69041576 + -4 = -8.69041576 a = -8.69041576 Simplifying a = -8.69041576

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.69041576, -8.69041576}

See similar equations:

| (3x-8)-(7x+1)= | | 7x-52=5x-12 | | 85-5x=13x+21 | | 65-2x=2x-21 | | D=3d-12 | | 15x-131=5x-11 | | 165-5x=22x+10 | | x^2-2xy-3y^2=4 | | -x=2a | | 8n-27=37 | | 5-8x=51-22x | | 4x-4/10x-20*15x+15/3x-3*6x-12/20x+20 | | 4x-4/10x-20*15x+15/3x-3 | | 99v^2-92v+9=0 | | 99v^2-92+9=0 | | 3ax+2b(x-1)+2bx+3a(x-1)=0 | | 4(5-x)=18 | | -4/3(2x-1)=-x-2 | | -4/3(2x+1) | | 2x+3=23+x | | 2x+2=3(x-1) | | 1/4/866 | | 3(2x-1)+5-3x=x+6 | | 3-2=+8 | | 175.00+2.00x=3x | | (5w+2)(7+w)=0 | | 3.00*x=630 | | 2.4-4.1=-1.7+4.1 | | (3x+1)(2x)(4)=240 | | 44-2x=34 | | 23-3x=5 | | 11g+5g+7+6= |

Equations solver categories