3x^2+5x+6.25=0

Simple and best practice solution for 3x^2+5x+6.25=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 3x^2+5x+6.25=0 equation:


Simplifying
3x2 + 5x + 6.25 = 0

Reorder the terms:
6.25 + 5x + 3x2 = 0

Solving
6.25 + 5x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
2.083333333 + 1.666666667x + x2 = 0

Move the constant term to the right:

Add '-2.083333333' to each side of the equation.
2.083333333 + 1.666666667x + -2.083333333 + x2 = 0 + -2.083333333

Reorder the terms:
2.083333333 + -2.083333333 + 1.666666667x + x2 = 0 + -2.083333333

Combine like terms: 2.083333333 + -2.083333333 = 0.000000000
0.000000000 + 1.666666667x + x2 = 0 + -2.083333333
1.666666667x + x2 = 0 + -2.083333333

Combine like terms: 0 + -2.083333333 = -2.083333333
1.666666667x + x2 = -2.083333333

The x term is 1.666666667x.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x + 0.6944444447 + x2 = -2.083333333 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x + x2 = -2.083333333 + 0.6944444447

Combine like terms: -2.083333333 + 0.6944444447 = -1.3888888883
0.6944444447 + 1.666666667x + x2 = -1.3888888883

Factor a perfect square on the left side:
(x + 0.8333333335)(x + 0.8333333335) = -1.3888888883

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3x^3-30x^2=o | | 3/2a-8=7 | | 3x-6=4x+9 | | 25=a-16 | | p+6=-4(4+7p)-7 | | 5n+6=2n+15 | | 35s=10.5 | | 5n+6=2n+5 | | 3(-4x+7)+14x=x-3 | | 4x-4x=x | | (x+8)(x+1)=30 | | 6k-2m=12 | | -6p+8=-(8-2p) | | 10m+.700=2500 | | 25.5xy=.85 | | 3+9x+4=34 | | 2x=60+5 | | 4(x-2)-2x+5=0 | | x+19=7+2x | | 6x+3y= | | 2y-14-5y=-2 | | x^2+5x-155=0 | | 22d=-66 | | 10t-13t=15 | | 7x^2+3-12x= | | -10-4x=-5(6x+2)+7x | | 15y+36-5y=6 | | 10x+5+-3x+7=40 | | 80*5+80+40*3= | | y-2+2y=10 | | 4x+2x+4=28 | | -6y+18-2y=2 |

Equations solver categories