a^2=4a+4

Simple and best practice solution for a^2=4a+4 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=4a+4 equation:


Simplifying
a2 = 4a + 4

Reorder the terms:
a2 = 4 + 4a

Solving
a2 = 4 + 4a

Solving for variable 'a'.

Reorder the terms:
-4 + -4a + a2 = 4 + 4a + -4 + -4a

Reorder the terms:
-4 + -4a + a2 = 4 + -4 + 4a + -4a

Combine like terms: 4 + -4 = 0
-4 + -4a + a2 = 0 + 4a + -4a
-4 + -4a + a2 = 4a + -4a

Combine like terms: 4a + -4a = 0
-4 + -4a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + -4a + 4 + a2 = 0 + 4

Reorder the terms:
-4 + 4 + -4a + a2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -4a + a2 = 0 + 4
-4a + a2 = 0 + 4

Combine like terms: 0 + 4 = 4
-4a + a2 = 4

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 = 4 + 4

Reorder the terms:
4 + -4a + a2 = 4 + 4

Combine like terms: 4 + 4 = 8
4 + -4a + a2 = 8

Factor a perfect square on the left side:
(a + -2)(a + -2) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(a + -2) equal to 2.828427125 and -2.828427125.

Subproblem 1

a + -2 = 2.828427125 Simplifying a + -2 = 2.828427125 Reorder the terms: -2 + a = 2.828427125 Solving -2 + a = 2.828427125 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 = 2.828427125 + 2 Combine like terms: -2 + 2 = 0 0 + a = 2.828427125 + 2 a = 2.828427125 + 2 Combine like terms: 2.828427125 + 2 = 4.828427125 a = 4.828427125 Simplifying a = 4.828427125

Subproblem 2

a + -2 = -2.828427125 Simplifying a + -2 = -2.828427125 Reorder the terms: -2 + a = -2.828427125 Solving -2 + a = -2.828427125 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 = -2.828427125 + 2 Combine like terms: -2 + 2 = 0 0 + a = -2.828427125 + 2 a = -2.828427125 + 2 Combine like terms: -2.828427125 + 2 = -0.828427125 a = -0.828427125 Simplifying a = -0.828427125

Solution

The solution to the problem is based on the solutions from the subproblems. a = {4.828427125, -0.828427125}

See similar equations:

| 10p-20=60 | | 8x^2-20x+9=0 | | 37+18+8w=67 | | 24+(-8)= | | z=0/3 | | 364=4t^2-53t+188 | | 4s+10=4-2 | | 1m+9=0 | | 55+25x=250+10x | | 9.25m+3.3=1.3-0.76 | | -7t=56 | | 200m-75m+57000=60300-175m | | 2-3k=-44 | | 10(x+4)=-(-8-9x)+3x | | -25w-7+9=-7 | | 7b+4=95 | | 3(x-3)=2(5) | | x(7x-1)+3=7x(x-3)x | | 2.1+y=10 | | w+2.7=8.9 | | 8=-0.0417t^2-.08333t+10 | | 2.1=p+(-9.3) | | X+x+2=77 | | 8m+20=8m+20 | | (x-3)1+6=(x-3)(x+3)1 | | 0.5=4.1x-(1.3x-4) | | n^2-12n-2=0 | | 72.1=p+(79.3) | | .7(x-2)=.7 | | lnx+lny^2=8 | | 4(x+4)-5=7(x-1)+9 | | 1.71+3.8=7.71 |

Equations solver categories