3A^2+12A+11=0

Simple and best practice solution for 3A^2+12A+11=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 3A^2+12A+11=0 equation:


Simplifying
3A2 + 12A + 11 = 0

Reorder the terms:
11 + 12A + 3A2 = 0

Solving
11 + 12A + 3A2 = 0

Solving for variable 'A'.

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

Divide each side by '3'.
3.666666667 + 4A + A2 = 0

Move the constant term to the right:

Add '-3.666666667' to each side of the equation.
3.666666667 + 4A + -3.666666667 + A2 = 0 + -3.666666667

Reorder the terms:
3.666666667 + -3.666666667 + 4A + A2 = 0 + -3.666666667

Combine like terms: 3.666666667 + -3.666666667 = 0.000000000
0.000000000 + 4A + A2 = 0 + -3.666666667
4A + A2 = 0 + -3.666666667

Combine like terms: 0 + -3.666666667 = -3.666666667
4A + A2 = -3.666666667

The A term is 4A.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4A + 4 + A2 = -3.666666667 + 4

Reorder the terms:
4 + 4A + A2 = -3.666666667 + 4

Combine like terms: -3.666666667 + 4 = 0.333333333
4 + 4A + A2 = 0.333333333

Factor a perfect square on the left side:
(A + 2)(A + 2) = 0.333333333

Calculate the square root of the right side: 0.577350269

Break this problem into two subproblems by setting 
(A + 2) equal to 0.577350269 and -0.577350269.

Subproblem 1

A + 2 = 0.577350269 Simplifying A + 2 = 0.577350269 Reorder the terms: 2 + A = 0.577350269 Solving 2 + A = 0.577350269 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + A = 0.577350269 + -2 Combine like terms: 2 + -2 = 0 0 + A = 0.577350269 + -2 A = 0.577350269 + -2 Combine like terms: 0.577350269 + -2 = -1.422649731 A = -1.422649731 Simplifying A = -1.422649731

Subproblem 2

A + 2 = -0.577350269 Simplifying A + 2 = -0.577350269 Reorder the terms: 2 + A = -0.577350269 Solving 2 + A = -0.577350269 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + A = -0.577350269 + -2 Combine like terms: 2 + -2 = 0 0 + A = -0.577350269 + -2 A = -0.577350269 + -2 Combine like terms: -0.577350269 + -2 = -2.577350269 A = -2.577350269 Simplifying A = -2.577350269

Solution

The solution to the problem is based on the solutions from the subproblems. A = {-1.422649731, -2.577350269}

See similar equations:

| n+14=5 | | 750X=300 | | 4(b+3)=8 | | 4e-5=17 | | (500+3X)Y=300 | | 5/2-1/3x=4/3x-7/6 | | (500+3X)Y=3000 | | -2-(6-6p)= | | 3x+y-23=40 | | (4j+3)(5-2j)= | | 5+t+20-10= | | 15=a/9 | | -5.9(2s+5)-1.5(3s-6)= | | -5(a-5)=25 | | 5-3c=10 | | -5(x-5)=25 | | x+36=-8x | | -6=.20z-7 | | 5y-2=3y+-10 | | -8=y/11 | | 7(4w+7)=-1.75 | | n/-10=13 | | 9v^4/3v^4 | | 4(y-9)=-4+44 | | 8(x+2)+3=-11(x-6)-4 | | 6+7*b=41 | | -12=y/-6 | | sin50=12/x | | 18-3X-X^2=0 | | -5(2t+9)=-65 | | 3x+2(x-5)=7-(x+3)sq | | c/-8=9 |

Equations solver categories