a^2-4a+8=0

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


Simplifying
a2 + -4a + 8 = 0

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

Solving
8 + -4a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + -4a + -8 + a2 = 0 + -8

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

Combine like terms: 8 + -8 = 0
0 + -4a + a2 = 0 + -8
-4a + a2 = 0 + -8

Combine like terms: 0 + -8 = -8
-4a + a2 = -8

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 = -8 + 4

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

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

Factor a perfect square on the left side:
(a + -2)(a + -2) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -b^2+b+42= | | 5p-15psquare=0 | | 8*9+8*11=8(9+11) | | -8(8+3x)-5=-237 | | x^2+10-15=0 | | 7b^4-567= | | 7(x-4)-3x=2(x-14) | | -600+10x=-x^2 | | ln(2y)=1 | | -117=3(1-8m) | | -600+10x=x^2 | | 9p-7=2 | | (9y-4)*3=27y-12 | | 4x-x^3+20-5x^2=0 | | (2a-5)(3a+1)=0 | | 7y+20=9y+2 | | -2a+2b= | | 3m-7n=pforMm | | t=-4.9t^2+19.6t+1 | | -5(k+2)=13-(k-1) | | (4x+9)(9x^2+6x+9)= | | t=-4.9t^2+39.2t+1 | | -273=-7(7+4x) | | -83=-5+6(a-7) | | log(x)+(2)log(x)=log(27) | | 11v+20=12v+17 | | x^2-x-26=4 | | 11v+20=12v | | 5(2m+3)-(1-2m)= | | 21=(3b-11)+(b+4) | | 8(3m-2)-73=0 | | X^2+18x=-71 |

Equations solver categories