3a-4=a^2-3a

Simple and best practice solution for 3a-4=a^2-3a 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-4=a^2-3a equation:


Simplifying
3a + -4 = a2 + -3a

Reorder the terms:
-4 + 3a = a2 + -3a

Reorder the terms:
-4 + 3a = -3a + a2

Solving
-4 + 3a = -3a + a2

Solving for variable 'a'.

Combine like terms: 3a + 3a = 6a
-4 + 6a + -1a2 = -3a + a2 + 3a + -1a2

Reorder the terms:
-4 + 6a + -1a2 = -3a + 3a + a2 + -1a2

Combine like terms: -3a + 3a = 0
-4 + 6a + -1a2 = 0 + a2 + -1a2
-4 + 6a + -1a2 = a2 + -1a2

Combine like terms: a2 + -1a2 = 0
-4 + 6a + -1a2 = 0

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

Divide each side by '-1'.
4 + -6a + a2 = 0

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:

| 4y/x | | (1/3x)(-3x^2) | | 2X^2-25X=1 | | E^3x+4=15 | | -x/3=1/4 | | x^6+24x^4+4x^2=0 | | 3x(2x-5y+4)= | | X=22-25 | | X^2/3-7^1/3=30 | | 7-(2x-9)= | | 4x/15=60x | | a+3(1.5)=-2 | | a+2(1.5)=-1 | | 10x=9x^2 | | 8+2z-2=9z+15-6z | | 7+15z-3=9z+56-7z | | 7+15x-3=9z+56-7z | | Y-6=-2(x+7) | | (6-x)(2+x)= | | 10/x=120 | | 0.46(4-3x)=3.1+0.4x | | (1/2*x)-4=-3-(1/3*x) | | (x/2)-(x/3) | | (5x-1)(m+2)= | | -7/3a=14 | | 3x-5(x+2y)= | | 20000i+10000i^3=2000 | | -19+x=-21 | | 4k^2+56k-14=0 | | -11/12-10/12= | | x-2/5x=x | | 6x+55=x^2 |

Equations solver categories