3x^2-8x+7=0

Simple and best practice solution for 3x^2-8x+7=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^2-8x+7=0 equation:


Simplifying
3x2 + -8x + 7 = 0

Reorder the terms:
7 + -8x + 3x2 = 0

Solving
7 + -8x + 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'.
2.333333333 + -2.666666667x + x2 = 0

Move the constant term to the right:

Add '-2.333333333' to each side of the equation.
2.333333333 + -2.666666667x + -2.333333333 + x2 = 0 + -2.333333333

Reorder the terms:
2.333333333 + -2.333333333 + -2.666666667x + x2 = 0 + -2.333333333

Combine like terms: 2.333333333 + -2.333333333 = 0.000000000
0.000000000 + -2.666666667x + x2 = 0 + -2.333333333
-2.666666667x + x2 = 0 + -2.333333333

Combine like terms: 0 + -2.333333333 = -2.333333333
-2.666666667x + x2 = -2.333333333

The x term is -2.666666667x.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667x + 1.777777780 + x2 = -2.333333333 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667x + x2 = -2.333333333 + 1.777777780

Combine like terms: -2.333333333 + 1.777777780 = -0.555555553
1.777777780 + -2.666666667x + x2 = -0.555555553

Factor a perfect square on the left side:
(x + -1.333333334)(x + -1.333333334) = -0.555555553

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3.5=3.5+0.076x | | 4.5x-5.4=2.7x | | 5x+4(-4)=0 | | 4=p+2 | | x-2=6-3x | | x-5y=12 | | 2p=10.2 | | 3(2x+5)=6x+5 | | 5-(x+3)=-x+2 | | 12.85=y+4 | | -4x+(-1)=5 | | c-1.86=6.7 | | 3a^2-13a=-14 | | -4x+1=5 | | q-3=1 | | -4-0=5 | | y+9.59=19.59 | | 12x+11=10x+17 | | 6x-9=6(x-6) | | -4x+0=5 | | 2(4x-1)=8x-2 | | 0.6x+4=0.2x+5 | | 5x+9=x+69 | | 3(2x+2)+5x=2(4x-1)-2(-x+1) | | 8a^2-18=0 | | 5+18z=35z^2 | | 124x-x^5=79 | | 3(2-x)=7x+12-4x | | 124x-x^5=x^3-79 | | 1.3*3.14159265359*10.8= | | 6x-3=x+2+2x | | 117x^2=79 |

Equations solver categories