a(11-a)=26

Simple and best practice solution for a(11-a)=26 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(11-a)=26 equation:


Simplifying
a(11 + -1a) = 26
(11 * a + -1a * a) = 26
(11a + -1a2) = 26

Solving
11a + -1a2 = 26

Solving for variable 'a'.

Reorder the terms:
-26 + 11a + -1a2 = 26 + -26

Combine like terms: 26 + -26 = 0
-26 + 11a + -1a2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
26 + -11a + a2 = 0

Move the constant term to the right:

Add '-26' to each side of the equation.
26 + -11a + -26 + a2 = 0 + -26

Reorder the terms:
26 + -26 + -11a + a2 = 0 + -26

Combine like terms: 26 + -26 = 0
0 + -11a + a2 = 0 + -26
-11a + a2 = 0 + -26

Combine like terms: 0 + -26 = -26
-11a + a2 = -26

The a term is -11a.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11a + 30.25 + a2 = -26 + 30.25

Reorder the terms:
30.25 + -11a + a2 = -26 + 30.25

Combine like terms: -26 + 30.25 = 4.25
30.25 + -11a + a2 = 4.25

Factor a perfect square on the left side:
(a + -5.5)(a + -5.5) = 4.25

Calculate the square root of the right side: 2.061552813

Break this problem into two subproblems by setting 
(a + -5.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

a + -5.5 = 2.061552813 Simplifying a + -5.5 = 2.061552813 Reorder the terms: -5.5 + a = 2.061552813 Solving -5.5 + a = 2.061552813 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + a = 2.061552813 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + a = 2.061552813 + 5.5 a = 2.061552813 + 5.5 Combine like terms: 2.061552813 + 5.5 = 7.561552813 a = 7.561552813 Simplifying a = 7.561552813

Subproblem 2

a + -5.5 = -2.061552813 Simplifying a + -5.5 = -2.061552813 Reorder the terms: -5.5 + a = -2.061552813 Solving -5.5 + a = -2.061552813 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + a = -2.061552813 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + a = -2.061552813 + 5.5 a = -2.061552813 + 5.5 Combine like terms: -2.061552813 + 5.5 = 3.438447187 a = 3.438447187 Simplifying a = 3.438447187

Solution

The solution to the problem is based on the solutions from the subproblems. a = {7.561552813, 3.438447187}

See similar equations:

| 9-3(-2x+4)=21 | | 2.6x+8.37=-14.51 | | 73+102+x=180 | | 3/7t=3/8t=3/8x7/3 | | N+1.2=7 | | x-9y=6 | | -19-11= | | xy+yx-2xy+1= | | 5(3t+4s)= | | 6x=-1.8 | | x+7=2n+1 | | 1+x=5x-15 | | x+1.12x=350 | | 16x+29=109 | | (7+4)+6=7+(x+6) | | 11=a-7.5 | | 3(x-6)+11(x+7)= | | W=gah | | Y+4x=1550 | | -4w=5/9 | | 420.18=6x | | 7x+3+2x+6=90 | | -9=-2b-7b | | 53-17= | | 5+-2x=12 | | X+4x=1550 | | 7(5x-7)+8x= | | 10t-5=45 | | 9x+1-10+10+x=131 | | 35=14p-7 | | x*5=78 | | 16m-(5+8m)= |

Equations solver categories