8x^2+9x+9=0

Simple and best practice solution for 8x^2+9x+9=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+9x+9=0 equation:


Simplifying
8x2 + 9x + 9 = 0

Reorder the terms:
9 + 9x + 8x2 = 0

Solving
9 + 9x + 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'.
1.125 + 1.125x + x2 = 0

Move the constant term to the right:

Add '-1.125' to each side of the equation.
1.125 + 1.125x + -1.125 + x2 = 0 + -1.125

Reorder the terms:
1.125 + -1.125 + 1.125x + x2 = 0 + -1.125

Combine like terms: 1.125 + -1.125 = 0.000
0.000 + 1.125x + x2 = 0 + -1.125
1.125x + x2 = 0 + -1.125

Combine like terms: 0 + -1.125 = -1.125
1.125x + x2 = -1.125

The x term is 1.125x.  Take half its coefficient (0.5625).
Square it (0.31640625) and add it to both sides.

Add '0.31640625' to each side of the equation.
1.125x + 0.31640625 + x2 = -1.125 + 0.31640625

Reorder the terms:
0.31640625 + 1.125x + x2 = -1.125 + 0.31640625

Combine like terms: -1.125 + 0.31640625 = -0.80859375
0.31640625 + 1.125x + x2 = -0.80859375

Factor a perfect square on the left side:
(x + 0.5625)(x + 0.5625) = -0.80859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| a=1/2*26*28 | | 250x=1342.5 | | 6x+16=3x+13 | | 5+10t-4=9t+9-7t | | 2x+6=3(x+2) | | x+1273= | | 2x-24-4x-30=3x-42+4x-66 | | 4y+9+7y= | | 9x-5x-2=0 | | 500.00+0.35x=1342.50 | | -6n-7=-10n+7 | | (x/17)=-8 | | /17=-8 | | (/17)=-8 | | D-50=300 | | 300-50=.80(d-100) | | x-7/4x=88 | | x-.14(x)=290.00 | | x-.14(x)=299.64 | | x+7/4x=88 | | 1/4t-1/3(7-t) | | 11x+25=54+25+2x | | 7/4x=88 | | 20=x-5 | | 3[7-(y+2)]= | | P=2(24)+2(62) | | 4x+15=123 | | 4x+15=107 | | 2.1q-5.1-5.2q=-4.1q-4.4 | | x+y=123 | | Sinx=2 | | 5/4n+3=6 |

Equations solver categories