8a^2-16a+5=0

Simple and best practice solution for 8a^2-16a+5=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 8a^2-16a+5=0 equation:


Simplifying
8a2 + -16a + 5 = 0

Reorder the terms:
5 + -16a + 8a2 = 0

Solving
5 + -16a + 8a2 = 0

Solving for variable 'a'.

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

Divide each side by '8'.
0.625 + -2a + a2 = 0

Move the constant term to the right:

Add '-0.625' to each side of the equation.
0.625 + -2a + -0.625 + a2 = 0 + -0.625

Reorder the terms:
0.625 + -0.625 + -2a + a2 = 0 + -0.625

Combine like terms: 0.625 + -0.625 = 0.000
0.000 + -2a + a2 = 0 + -0.625
-2a + a2 = 0 + -0.625

Combine like terms: 0 + -0.625 = -0.625
-2a + a2 = -0.625

The a term is -2a.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2a + 1 + a2 = -0.625 + 1

Reorder the terms:
1 + -2a + a2 = -0.625 + 1

Combine like terms: -0.625 + 1 = 0.375
1 + -2a + a2 = 0.375

Factor a perfect square on the left side:
(a + -1)(a + -1) = 0.375

Calculate the square root of the right side: 0.612372436

Break this problem into two subproblems by setting 
(a + -1) equal to 0.612372436 and -0.612372436.

Subproblem 1

a + -1 = 0.612372436 Simplifying a + -1 = 0.612372436 Reorder the terms: -1 + a = 0.612372436 Solving -1 + a = 0.612372436 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + a = 0.612372436 + 1 Combine like terms: -1 + 1 = 0 0 + a = 0.612372436 + 1 a = 0.612372436 + 1 Combine like terms: 0.612372436 + 1 = 1.612372436 a = 1.612372436 Simplifying a = 1.612372436

Subproblem 2

a + -1 = -0.612372436 Simplifying a + -1 = -0.612372436 Reorder the terms: -1 + a = -0.612372436 Solving -1 + a = -0.612372436 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + a = -0.612372436 + 1 Combine like terms: -1 + 1 = 0 0 + a = -0.612372436 + 1 a = -0.612372436 + 1 Combine like terms: -0.612372436 + 1 = 0.387627564 a = 0.387627564 Simplifying a = 0.387627564

Solution

The solution to the problem is based on the solutions from the subproblems. a = {1.612372436, 0.387627564}

See similar equations:

| x=(0.15x)+5000 | | x=y+(x*0.15) | | 14+6m=5m+6 | | 2x^2+21x-135=0 | | -7+4(w+3)=39 | | 2onx= | | -3v+5(v-6)=-34 | | -3v+5(y-6)=-34 | | 2i/6-7i | | sin^2(x)=0.49 | | 3x+159=13x-11 | | x+137=530 | | 2x^2-21x-135=0 | | 3x-5=13-x | | 4x+6y-61=2x+6y-36 | | z+3=z-10 | | 13w+18=15w-8 | | lz-3l=lz-10l | | 27÷-9/8 | | a=-3+(-1b) | | -6a-6b=18 | | 6a+6b=-18 | | x2=9/100 | | 2x+3(8-2x)=12 | | x-2=45 | | 4(3z-6)+8(2z+4)= | | Sin^2x+sinx-1= | | (3b+1)(b-2)=0 | | x-2y=452x+y=3 | | 8x+7-x+6= | | n-1-7=2n-15 | | -0.10(35)+0.70x=0.05(x-18) |

Equations solver categories