7x^2-6x+20=0

Simple and best practice solution for 7x^2-6x+20=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 7x^2-6x+20=0 equation:


Simplifying
7x2 + -6x + 20 = 0

Reorder the terms:
20 + -6x + 7x2 = 0

Solving
20 + -6x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
2.857142857 + -0.8571428571x + x2 = 0

Move the constant term to the right:

Add '-2.857142857' to each side of the equation.
2.857142857 + -0.8571428571x + -2.857142857 + x2 = 0 + -2.857142857

Reorder the terms:
2.857142857 + -2.857142857 + -0.8571428571x + x2 = 0 + -2.857142857

Combine like terms: 2.857142857 + -2.857142857 = 0.000000000
0.000000000 + -0.8571428571x + x2 = 0 + -2.857142857
-0.8571428571x + x2 = 0 + -2.857142857

Combine like terms: 0 + -2.857142857 = -2.857142857
-0.8571428571x + x2 = -2.857142857

The x term is -0.8571428571x.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571x + 0.1836734694 + x2 = -2.857142857 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571x + x2 = -2.857142857 + 0.1836734694

Combine like terms: -2.857142857 + 0.1836734694 = -2.6734693876
0.1836734694 + -0.8571428571x + x2 = -2.6734693876

Factor a perfect square on the left side:
(x + -0.4285714286)(x + -0.4285714286) = -2.6734693876

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| d*(b-0.8x/2) | | Y-b=2(x-4) | | 7+2=7x-3 | | 4+78=39x+40 | | 6=6x-5x | | 2x-24=-3x | | 6x-24=x | | 4x-7=8x+4 | | 4t-8t=-5 | | 4t-8whent=-5 | | 31-6x=13-9x | | 120+6x=6x | | T(n)=30-5n | | 6t+13=2t+17 | | 4/7=9/a-7 | | 12=-16x | | 31=13-3x | | log(x^2-15x)=3 | | 5p^1=81 | | W+5=w+2 | | 6t-5=3t+10 | | 5a+6=2a+24 | | 3(k+6)=30 | | 10x=3x+3 | | (2x-3)2-(11-x)2+(7-4x)(7+4x)= | | 5-5X=23-2X | | 30-4(3x+2)=9 | | 72=2(w-6)+2w | | 5(2x+5)=31(7+2x) | | 5i-6=14 | | 180y-360-3y^2+6y=120y | | 8+2x=x |

Equations solver categories