2x*2x+9x+18=0

Simple and best practice solution for 2x*2x+9x+18=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 2x*2x+9x+18=0 equation:


Simplifying
2x * 2x + 9x + 18 = 0

Reorder the terms for easier multiplication:
2 * 2x * x + 9x + 18 = 0

Multiply 2 * 2
4x * x + 9x + 18 = 0

Multiply x * x
4x2 + 9x + 18 = 0

Reorder the terms:
18 + 9x + 4x2 = 0

Solving
18 + 9x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
4.5 + 2.25x + x2 = 0

Move the constant term to the right:

Add '-4.5' to each side of the equation.
4.5 + 2.25x + -4.5 + x2 = 0 + -4.5

Reorder the terms:
4.5 + -4.5 + 2.25x + x2 = 0 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + 2.25x + x2 = 0 + -4.5
2.25x + x2 = 0 + -4.5

Combine like terms: 0 + -4.5 = -4.5
2.25x + x2 = -4.5

The x term is 2.25x.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25x + 1.265625 + x2 = -4.5 + 1.265625

Reorder the terms:
1.265625 + 2.25x + x2 = -4.5 + 1.265625

Combine like terms: -4.5 + 1.265625 = -3.234375
1.265625 + 2.25x + x2 = -3.234375

Factor a perfect square on the left side:
(x + 1.125)(x + 1.125) = -3.234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 6(x-12)-2=16x-134 | | 9x*9x+21x+61=0 | | (1/x-5)+(2x/5-x)-1 | | 6(4x-x)=12-36 | | Ln(6x)=5 | | 5x-4=5x-5 | | 6a-19=-6a+-19+36 | | ln(4x-5x)=0 | | 5xsquare+10x+20=0 | | 5xsquare+9x+18=0 | | -10a^2-4a=0 | | 7x+12y= | | (x^3-3x^2-3x-4)/(x+2) | | 7(2)+12(3)= | | 6-y=9y-9y | | -6x=-24+2x | | 400-80x+40y=0 | | 4p-21=-37+6p | | p=c+2b+3b | | Y=4*4-8 | | 8y+6=9y+0 | | 8b+8b-16=34 | | 4n+11-7n=(-13) | | -10(-10+8y)=60 | | 4y/y^2-10y+21-1/y-3 | | 5x=5-25(1.5x-3) | | 4x^3+2.4x^2+.36x+.00002=0 | | (4x+5)(3y+2x)= | | 8x-2(-4.5x+2)=8 | | 40c-64=56 | | 10r^2-29+10= | | p=2(5+3) |

Equations solver categories