9x^2+3x+2.25=0

Simple and best practice solution for 9x^2+3x+2.25=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 9x^2+3x+2.25=0 equation:


Simplifying
9x2 + 3x + 2.25 = 0

Reorder the terms:
2.25 + 3x + 9x2 = 0

Solving
2.25 + 3x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
0.25 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + 0.3333333333x + -0.25 + x2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + 0.3333333333x + x2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + 0.3333333333x + x2 = 0 + -0.25
0.3333333333x + x2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
0.3333333333x + x2 = -0.25

The x term is 0.3333333333x.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333x + 0.02777777779 + x2 = -0.25 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333x + x2 = -0.25 + 0.02777777779

Combine like terms: -0.25 + 0.02777777779 = -0.22222222221
0.02777777779 + 0.3333333333x + x2 = -0.22222222221

Factor a perfect square on the left side:
(x + 0.1666666667)(x + 0.1666666667) = -0.22222222221

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3x^(1/2)-7x^(1/4)-6=0 | | 5y=x+4 | | 0=8x^2-48x+72 | | 4x-2-2x=x-6 | | -7=z/5 | | 8-4=blank+2 | | (x*x)(-0.75*-0.75)=1 | | (-8)/(x^2-1)-(7)/(3-x) | | 8(x+3)=6 | | 15v-4/10=4/5 | | 49c^2-1=0 | | x+(x+1)+(x+2)=371 | | 5s+2=22 | | 2n^2=-2n | | .1387=(-9E-08x^2)+(.0007x)+(.1171) | | -11-1=10y-14-9y | | F(x)=(8) | | 2400/40=6600/n | | (3x*3x)+(2*2)-3=13 | | 2x+2-3x+3=3+2 | | 11*X^5+90*X^3+425*X-125=0 | | 1/2=4p | | X+1+3x=45 | | 8m=4(8m+24) | | 32/6 | | 5x^7/6-35=0 | | 15n-6-14n+7=11 | | 5x+7y=-11 | | 4m+20=5m+8 | | 3x^2=15x+2 | | k-15.6=4.9k | | ln(x)=4.2+ln(7.1) |

Equations solver categories