a(a-4)=4a-(2a+4)

Simple and best practice solution for a(a-4)=4a-(2a+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(a-4)=4a-(2a+4) equation:


Simplifying
a(a + -4) = 4a + -1(2a + 4)

Reorder the terms:
a(-4 + a) = 4a + -1(2a + 4)
(-4 * a + a * a) = 4a + -1(2a + 4)
(-4a + a2) = 4a + -1(2a + 4)

Reorder the terms:
-4a + a2 = 4a + -1(4 + 2a)
-4a + a2 = 4a + (4 * -1 + 2a * -1)
-4a + a2 = 4a + (-4 + -2a)

Reorder the terms:
-4a + a2 = -4 + 4a + -2a

Combine like terms: 4a + -2a = 2a
-4a + a2 = -4 + 2a

Solving
-4a + a2 = -4 + 2a

Solving for variable 'a'.

Reorder the terms:
4 + -4a + -2a + a2 = -4 + 2a + 4 + -2a

Combine like terms: -4a + -2a = -6a
4 + -6a + a2 = -4 + 2a + 4 + -2a

Reorder the terms:
4 + -6a + a2 = -4 + 4 + 2a + -2a

Combine like terms: -4 + 4 = 0
4 + -6a + a2 = 0 + 2a + -2a
4 + -6a + a2 = 2a + -2a

Combine like terms: 2a + -2a = 0
4 + -6a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -6a + -4 + a2 = 0 + -4

Reorder the terms:
4 + -4 + -6a + a2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -6a + a2 = 0 + -4
-6a + a2 = 0 + -4

Combine like terms: 0 + -4 = -4
-6a + a2 = -4

The a term is -6a.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6a + 9 + a2 = -4 + 9

Reorder the terms:
9 + -6a + a2 = -4 + 9

Combine like terms: -4 + 9 = 5
9 + -6a + a2 = 5

Factor a perfect square on the left side:
(a + -3)(a + -3) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(a + -3) equal to 2.236067978 and -2.236067978.

Subproblem 1

a + -3 = 2.236067978 Simplifying a + -3 = 2.236067978 Reorder the terms: -3 + a = 2.236067978 Solving -3 + a = 2.236067978 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + a = 2.236067978 + 3 Combine like terms: -3 + 3 = 0 0 + a = 2.236067978 + 3 a = 2.236067978 + 3 Combine like terms: 2.236067978 + 3 = 5.236067978 a = 5.236067978 Simplifying a = 5.236067978

Subproblem 2

a + -3 = -2.236067978 Simplifying a + -3 = -2.236067978 Reorder the terms: -3 + a = -2.236067978 Solving -3 + a = -2.236067978 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + a = -2.236067978 + 3 Combine like terms: -3 + 3 = 0 0 + a = -2.236067978 + 3 a = -2.236067978 + 3 Combine like terms: -2.236067978 + 3 = 0.763932022 a = 0.763932022 Simplifying a = 0.763932022

Solution

The solution to the problem is based on the solutions from the subproblems. a = {5.236067978, 0.763932022}

See similar equations:

| 3x+6y=375 | | 20x^2y^2-4xy=0 | | 7x-3=-19-x | | 2/3x-4=11/4 | | 6x+1=-13+x | | 5u-8/4+4u-1/5=6 | | 15x+75=720 | | -m^2+14+(-6m^2+13+m^2)=0 | | 6x+9=-21+3x | | -42=2n+2+n | | (5/12)=((x+1)/4) | | 4x+5=5+5x | | 3+3t=17 | | 100=-2x | | 5w^2/10z^6 | | 7x-10-3x=6x-9 | | -2x+5-4(5-2x)+3x-(9-5x)+4= | | 5/2y-2/3=-5/4y-7 | | 2x+6(x+6)=68 | | 14v+6=2(5+7w)-4 | | 8x-3=2+7x | | 1-2x=3x-54 | | 21-7(19-x^2+6)-3x^2+1=0 | | -5/3v+4/3=-4v-4/5 | | 4x=3(4)-7 | | 1/3x12+7 | | 6x+8x-36=3+5x | | z+1.7=-18.1 | | (P+5)(p+2)=0 | | 7x+7=6x+5 | | x-0.2x=45 | | 4s^4+16s=0 |

Equations solver categories