8x^2+7x+2=0

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


Simplifying
8x2 + 7x + 2 = 0

Reorder the terms:
2 + 7x + 8x2 = 0

Solving
2 + 7x + 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'.
0.25 + 0.875x + x2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + 0.875x + -0.25 + x2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + 0.875x + x2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + 0.875x + x2 = 0 + -0.25
0.875x + x2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
0.875x + x2 = -0.25

The x term is 0.875x.  Take half its coefficient (0.4375).
Square it (0.19140625) and add it to both sides.

Add '0.19140625' to each side of the equation.
0.875x + 0.19140625 + x2 = -0.25 + 0.19140625

Reorder the terms:
0.19140625 + 0.875x + x2 = -0.25 + 0.19140625

Combine like terms: -0.25 + 0.19140625 = -0.05859375
0.19140625 + 0.875x + x2 = -0.05859375

Factor a perfect square on the left side:
(x + 0.4375)(x + 0.4375) = -0.05859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| b+1+5=8 | | 0=24x^2+8x/4x | | 5x+2x-9-21=180 | | 5x(x+3)-7(x+5)=5 | | 10=3r-5r | | 1/2(4x-10)=x | | 17=1-5x-3x | | R=a+c/2b | | 0=-5k-k | | 6(1-6n)-3=-34+n | | 4-4x=10x-10 | | 7=n+6n | | -6n-3n=-18 | | 5x^3-9x^2+4x=0 | | -15=6a+5-2a | | (5x-21)+(2x-9)=180 | | Y^2-4x^2-12y-16x+4=0 | | 7=p-3-6p | | 3xsquared+15x+14=4xsqaured | | -2=5x-3x | | 3x+26=72 | | 3xsquared+15x+14=4xsquared | | X=-22+3x | | -2(-7n+1)=-6(9-2n)+9n | | 5+3(9-x)=7(3+x)+1 | | X+10=3x-12 | | -q+3(10+2q)=-2 | | 122-2/3=260 | | 3(2x+3)=-6(-4+2x)-5x | | -(7n+3)=-(1+6n)+7n | | 10n-1-9n+2=13 | | 7x+3x+20=90 |

Equations solver categories