4x^2=-3x-8

Simple and best practice solution for 4x^2=-3x-8 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 4x^2=-3x-8 equation:


Simplifying
4x2 = -3x + -8

Reorder the terms:
4x2 = -8 + -3x

Solving
4x2 = -8 + -3x

Solving for variable 'x'.

Reorder the terms:
8 + 3x + 4x2 = -8 + -3x + 8 + 3x

Reorder the terms:
8 + 3x + 4x2 = -8 + 8 + -3x + 3x

Combine like terms: -8 + 8 = 0
8 + 3x + 4x2 = 0 + -3x + 3x
8 + 3x + 4x2 = -3x + 3x

Combine like terms: -3x + 3x = 0
8 + 3x + 4x2 = 0

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

Divide each side by '4'.
2 + 0.75x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 0.75x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 0.75x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 0.75x + x2 = 0 + -2
0.75x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
0.75x + x2 = -2

The x term is 0.75x.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75x + 0.140625 + x2 = -2 + 0.140625

Reorder the terms:
0.140625 + 0.75x + x2 = -2 + 0.140625

Combine like terms: -2 + 0.140625 = -1.859375
0.140625 + 0.75x + x2 = -1.859375

Factor a perfect square on the left side:
(x + 0.375)(x + 0.375) = -1.859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3+4x-1=x+14+x-4 | | 8m-6=-5m+15 | | -3x/4-2 | | .25x+.10(9-x)=2.5 | | x^2+x+2y^2-16y+32=0 | | 3q+7=q-13 | | 3=6-2(x-3) | | y=-x^2+16 | | 15y-8=10y+2 | | 5x+7=3(x+4) | | .74=11612000-x/5246000 | | 1+192837465x-d=231111111116666666 | | 4/b-7/d= | | 55x-9+g=100007 | | 4/(x-6)=5 | | 55x-9+g= | | 3t+19-5t=91 | | z^2(4z^3-10)=0 | | u/4=0 | | 5p^2+30x=0 | | 4x-1=2(x-5) | | 5c+17-8c=156 | | 2=p/6 | | 5/60=w/10 | | 4x-1=2(x-3) | | 345=874-x/874 | | 9r+9= | | 2x-1/4x=(-28) | | 3/4d=18 | | 7(x+8)+4=-9(x-9)-1 | | 2s+a=447 | | 3/8d=6 |

Equations solver categories