5a^2-11a=6

Simple and best practice solution for 5a^2-11a=6 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 5a^2-11a=6 equation:


Simplifying
5a2 + -11a = 6

Reorder the terms:
-11a + 5a2 = 6

Solving
-11a + 5a2 = 6

Solving for variable 'a'.

Reorder the terms:
-6 + -11a + 5a2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + -11a + 5a2 = 0

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

Divide each side by '5'.
-1.2 + -2.2a + a2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + -2.2a + 1.2 + a2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + -2.2a + a2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + -2.2a + a2 = 0 + 1.2
-2.2a + a2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
-2.2a + a2 = 1.2

The a term is -2.2a.  Take half its coefficient (-1.1).
Square it (1.21) and add it to both sides.

Add '1.21' to each side of the equation.
-2.2a + 1.21 + a2 = 1.2 + 1.21

Reorder the terms:
1.21 + -2.2a + a2 = 1.2 + 1.21

Combine like terms: 1.2 + 1.21 = 2.41
1.21 + -2.2a + a2 = 2.41

Factor a perfect square on the left side:
(a + -1.1)(a + -1.1) = 2.41

Calculate the square root of the right side: 1.55241747

Break this problem into two subproblems by setting 
(a + -1.1) equal to 1.55241747 and -1.55241747.

Subproblem 1

a + -1.1 = 1.55241747 Simplifying a + -1.1 = 1.55241747 Reorder the terms: -1.1 + a = 1.55241747 Solving -1.1 + a = 1.55241747 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + a = 1.55241747 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + a = 1.55241747 + 1.1 a = 1.55241747 + 1.1 Combine like terms: 1.55241747 + 1.1 = 2.65241747 a = 2.65241747 Simplifying a = 2.65241747

Subproblem 2

a + -1.1 = -1.55241747 Simplifying a + -1.1 = -1.55241747 Reorder the terms: -1.1 + a = -1.55241747 Solving -1.1 + a = -1.55241747 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + a = -1.55241747 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + a = -1.55241747 + 1.1 a = -1.55241747 + 1.1 Combine like terms: -1.55241747 + 1.1 = -0.45241747 a = -0.45241747 Simplifying a = -0.45241747

Solution

The solution to the problem is based on the solutions from the subproblems. a = {2.65241747, -0.45241747}

See similar equations:

| n/4=9=12 | | 8.6a+10=104.6 | | 4(x+1)+3x=39 | | s-15=15.85 | | 10x^2+15=30 | | 81x=-5x-8 | | 4pi^2x/x^2 | | x+(x+3)+8x=384 | | 4pi^2y/x^2 | | 2x-3y=-20fory | | 16r2/16r3 | | l4pi^2/t^2 | | x+(x+6)=9 | | 10x=8x+30 | | x(ln^3x)=0 | | 2x+3-x=6x-10 | | 24x-9-18x+2=17x-3-11x+11 | | 12m^2+5m+2=0 | | 9x^3+78x^2+105x= | | a^2=-5a+6 | | 7(x+2)=7(x+10) | | 7k+-5=-19 | | 5ln(4x)=16 | | 3x-2(2x-7)=5(2x-8)+5x | | 13=5m+-2 | | 4x^2-25x+45=9 | | x(18-2x)(33-2x)=x | | 3x+24=58x | | T=2n-3 | | 49x-20x+9=0 | | n=(5m-24)/3 | | (8x)+(4y)=7869 |

Equations solver categories