3a^2+6a-73=3

Simple and best practice solution for 3a^2+6a-73=3 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 3a^2+6a-73=3 equation:


Simplifying
3a2 + 6a + -73 = 3

Reorder the terms:
-73 + 6a + 3a2 = 3

Solving
-73 + 6a + 3a2 = 3

Solving for variable 'a'.

Reorder the terms:
-73 + -3 + 6a + 3a2 = 3 + -3

Combine like terms: -73 + -3 = -76
-76 + 6a + 3a2 = 3 + -3

Combine like terms: 3 + -3 = 0
-76 + 6a + 3a2 = 0

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

Divide each side by '3'.
-25.33333333 + 2a + a2 = 0

Move the constant term to the right:

Add '25.33333333' to each side of the equation.
-25.33333333 + 2a + 25.33333333 + a2 = 0 + 25.33333333

Reorder the terms:
-25.33333333 + 25.33333333 + 2a + a2 = 0 + 25.33333333

Combine like terms: -25.33333333 + 25.33333333 = 0.00000000
0.00000000 + 2a + a2 = 0 + 25.33333333
2a + a2 = 0 + 25.33333333

Combine like terms: 0 + 25.33333333 = 25.33333333
2a + a2 = 25.33333333

The a term is 2a.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2a + 1 + a2 = 25.33333333 + 1

Reorder the terms:
1 + 2a + a2 = 25.33333333 + 1

Combine like terms: 25.33333333 + 1 = 26.33333333
1 + 2a + a2 = 26.33333333

Factor a perfect square on the left side:
(a + 1)(a + 1) = 26.33333333

Calculate the square root of the right side: 5.131601439

Break this problem into two subproblems by setting 
(a + 1) equal to 5.131601439 and -5.131601439.

Subproblem 1

a + 1 = 5.131601439 Simplifying a + 1 = 5.131601439 Reorder the terms: 1 + a = 5.131601439 Solving 1 + a = 5.131601439 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a = 5.131601439 + -1 Combine like terms: 1 + -1 = 0 0 + a = 5.131601439 + -1 a = 5.131601439 + -1 Combine like terms: 5.131601439 + -1 = 4.131601439 a = 4.131601439 Simplifying a = 4.131601439

Subproblem 2

a + 1 = -5.131601439 Simplifying a + 1 = -5.131601439 Reorder the terms: 1 + a = -5.131601439 Solving 1 + a = -5.131601439 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a = -5.131601439 + -1 Combine like terms: 1 + -1 = 0 0 + a = -5.131601439 + -1 a = -5.131601439 + -1 Combine like terms: -5.131601439 + -1 = -6.131601439 a = -6.131601439 Simplifying a = -6.131601439

Solution

The solution to the problem is based on the solutions from the subproblems. a = {4.131601439, -6.131601439}

See similar equations:

| 2x+1=8x-2x+3 | | 4t-12=16t-22 | | 36x^5/4x^2 | | 8x-7y=-45 | | 24=5y | | x+2x+12+2x+8+120+x-12=540 | | -x^2-3x+2=x+6 | | 2+3y=21 | | 2p+4w=100 | | 6y-8+3y=55 | | 8a^2+18ab-35b^2=0 | | 15=3y+0.5 | | 1/4x-1=4 | | 6y^2+18y-108=0 | | 16-z=15 | | 18w-3z=39 | | r/5=1 | | 1/4x-1=1 | | 5/6b=1/12 | | 10-5x=2(x-8.5) | | (14r+9)(5r-8)=0 | | 100-m=3m+2m-15 | | 0=2w^2-2162 | | 6x^6+9x^4+3x^3=0 | | 31x+10=21x+3 | | -9x+19y=-47 | | (4+2)+8=4+(x+8) | | 5.90+1.03+.013= | | b-3b=38-5b | | 81x^2-16x^2=0 | | 6(3n-1)=-120 | | (13r+9)(4r-3)=0 |

Equations solver categories