8x=-2-9x^2

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


Simplifying
8x = -2 + -9x2

Solving
8x = -2 + -9x2

Solving for variable 'x'.

Reorder the terms:
2 + 8x + 9x2 = -2 + -9x2 + 2 + 9x2

Reorder the terms:
2 + 8x + 9x2 = -2 + 2 + -9x2 + 9x2

Combine like terms: -2 + 2 = 0
2 + 8x + 9x2 = 0 + -9x2 + 9x2
2 + 8x + 9x2 = -9x2 + 9x2

Combine like terms: -9x2 + 9x2 = 0
2 + 8x + 9x2 = 0

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

Divide each side by '9'.
0.2222222222 + 0.8888888889x + x2 = 0

Move the constant term to the right:

Add '-0.2222222222' to each side of the equation.
0.2222222222 + 0.8888888889x + -0.2222222222 + x2 = 0 + -0.2222222222

Reorder the terms:
0.2222222222 + -0.2222222222 + 0.8888888889x + x2 = 0 + -0.2222222222

Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000
0.0000000000 + 0.8888888889x + x2 = 0 + -0.2222222222
0.8888888889x + x2 = 0 + -0.2222222222

Combine like terms: 0 + -0.2222222222 = -0.2222222222
0.8888888889x + x2 = -0.2222222222

The x term is 0.8888888889x.  Take half its coefficient (0.4444444445).
Square it (0.1975308642) and add it to both sides.

Add '0.1975308642' to each side of the equation.
0.8888888889x + 0.1975308642 + x2 = -0.2222222222 + 0.1975308642

Reorder the terms:
0.1975308642 + 0.8888888889x + x2 = -0.2222222222 + 0.1975308642

Combine like terms: -0.2222222222 + 0.1975308642 = -0.024691358
0.1975308642 + 0.8888888889x + x2 = -0.024691358

Factor a perfect square on the left side:
(x + 0.4444444445)(x + 0.4444444445) = -0.024691358

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 1-2b+6b=9 | | 100x^2-200x=100 | | m^2=7m+18 | | -m-5(m+7)=-4m-21 | | 9x-8+35x=6x+33-3x | | x^2+5x-36= | | 3y+9x=-7 | | p^2-14p=-49 | | 8y-4x=2 | | 2n+9=5n-3(n-2) | | 12-3x=30y | | 2(4n+7)=-2 | | 26+v=3-5(7-6v) | | c^2=-2c-15 | | 6-9h=42 | | 3+2(7n+8)=-37+6n | | 15+[7+(-3)]= | | 18=3y-12 | | 3n=2(15-n) | | -3-7x-2x=-12 | | 10+[9+(-8)]= | | 20-2r=8(8-3r) | | 14=6d | | 8p-(2p+5)p=1.5 | | 15+[-3+(-5)]= | | 13x-3=3+12x | | 7x+40=-8(2x-7)+7x | | 7n-3n=-20 | | 8+3x-5=4x+10-8x | | -(5k+7)=-25-2k | | m^2=7m-12 | | 14+[6+(-7)]= |

Equations solver categories