8x^2-4x+7=0

Simple and best practice solution for 8x^2-4x+7=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 8x^2-4x+7=0 equation:


Simplifying
8x2 + -4x + 7 = 0

Reorder the terms:
7 + -4x + 8x2 = 0

Solving
7 + -4x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
0.875 + -0.5x + x2 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + -0.5x + -0.875 + x2 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + -0.5x + x2 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + -0.5x + x2 = 0 + -0.875
-0.5x + x2 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
-0.5x + x2 = -0.875

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = -0.875 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = -0.875 + 0.0625

Combine like terms: -0.875 + 0.0625 = -0.8125
0.0625 + -0.5x + x2 = -0.8125

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = -0.8125

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| g/3.4=2.2 | | X-1/12 | | y=-7x-45 | | 122=4+9f | | 3G-6h=8x | | -5(1-8h)=-32 | | 47=4x-13 | | 8=n+6-2 | | (-2)=-18forw | | A=(23.4)(15.8) | | 2n+45=12+5n | | 6x+3y=4x | | 5v-10=75 | | (x-3)/3=0 | | (x-3)/3= | | 10y=5x+3 | | -3=x-5+3 | | 7(2x+1)-2x=3(4x+1)+4 | | X^2(X^2-8x+7)= | | 68=5x+8 | | 2x+3=-6x+-37 | | -9y+6+2y=-17 | | 2(2x+9)=2(2x+1)+2x | | 5(6+x)=4(x-2) | | 4x+7=-6+47 | | 2(4x+2)=7(x+6) | | 6x^6/2x^2y | | N-12=3x | | 5(3x+5)=4(3x+4)+3x | | 2(x+1)=7-5(2x+1) | | N-12=5x | | 2y+0x=4 |

Equations solver categories