4a^2-8-1a=0

Simple and best practice solution for 4a^2-8-1a=0 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 4a^2-8-1a=0 equation:


Simplifying
4a2 + -8 + -1a = 0

Reorder the terms:
-8 + -1a + 4a2 = 0

Solving
-8 + -1a + 4a2 = 0

Solving for variable 'a'.

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

Divide each side by '4'.
-2 + -0.25a + a2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -0.25a + 2 + a2 = 0 + 2

Reorder the terms:
-2 + 2 + -0.25a + a2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -0.25a + a2 = 0 + 2
-0.25a + a2 = 0 + 2

Combine like terms: 0 + 2 = 2
-0.25a + a2 = 2

The a term is -0.25a.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25a + 0.015625 + a2 = 2 + 0.015625

Reorder the terms:
0.015625 + -0.25a + a2 = 2 + 0.015625

Combine like terms: 2 + 0.015625 = 2.015625
0.015625 + -0.25a + a2 = 2.015625

Factor a perfect square on the left side:
(a + -0.125)(a + -0.125) = 2.015625

Calculate the square root of the right side: 1.419727086

Break this problem into two subproblems by setting 
(a + -0.125) equal to 1.419727086 and -1.419727086.

Subproblem 1

a + -0.125 = 1.419727086 Simplifying a + -0.125 = 1.419727086 Reorder the terms: -0.125 + a = 1.419727086 Solving -0.125 + a = 1.419727086 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + a = 1.419727086 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + a = 1.419727086 + 0.125 a = 1.419727086 + 0.125 Combine like terms: 1.419727086 + 0.125 = 1.544727086 a = 1.544727086 Simplifying a = 1.544727086

Subproblem 2

a + -0.125 = -1.419727086 Simplifying a + -0.125 = -1.419727086 Reorder the terms: -0.125 + a = -1.419727086 Solving -0.125 + a = -1.419727086 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + a = -1.419727086 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + a = -1.419727086 + 0.125 a = -1.419727086 + 0.125 Combine like terms: -1.419727086 + 0.125 = -1.294727086 a = -1.294727086 Simplifying a = -1.294727086

Solution

The solution to the problem is based on the solutions from the subproblems. a = {1.544727086, -1.294727086}

See similar equations:

| 4=n+13 | | 2(x-5)+7=4x-12 | | 1.5z=12.75 | | Y-8=0.75(x-5) | | r=ln(6x+7y) | | 16x+-7=7+8y | | x-3=4(x+6) | | 8d-9=7d-10d+2 | | 5-6(b+2)=b-14 | | -28=8u+4(u-8) | | -10z+2=2-10z | | 7x+2.5=7x+3.5 | | 800=xy | | -10-7b=-7b | | -1-3t+6=-5-3t | | 3x^2+2=y | | -6r+5r=-r | | -10f-3=-10f | | 8-5p=-5p-1 | | 7+8y=16x-7 | | 20*m=60 | | 3+7y=7y+3 | | x^2-9x+10= | | 3(x-2)=4(x-13) | | f-8=-1.1 | | 7.5x-4.1=6.7-4.5c | | u/5-2.6=3.8 | | 0.5=-60 | | 2+5m=5m | | 6+4(6-4)=210 | | 10s+10=10+3s | | -3.8x+4.1=23.1 |

Equations solver categories