7x^2-10x+85=0

Simple and best practice solution for 7x^2-10x+85=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^2-10x+85=0 equation:


Simplifying
7x2 + -10x + 85 = 0

Reorder the terms:
85 + -10x + 7x2 = 0

Solving
85 + -10x + 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'.
12.14285714 + -1.428571429x + x2 = 0

Move the constant term to the right:

Add '-12.14285714' to each side of the equation.
12.14285714 + -1.428571429x + -12.14285714 + x2 = 0 + -12.14285714

Reorder the terms:
12.14285714 + -12.14285714 + -1.428571429x + x2 = 0 + -12.14285714

Combine like terms: 12.14285714 + -12.14285714 = 0.00000000
0.00000000 + -1.428571429x + x2 = 0 + -12.14285714
-1.428571429x + x2 = 0 + -12.14285714

Combine like terms: 0 + -12.14285714 = -12.14285714
-1.428571429x + x2 = -12.14285714

The x term is -1.428571429x.  Take half its coefficient (-0.7142857145).
Square it (0.5102040819) and add it to both sides.

Add '0.5102040819' to each side of the equation.
-1.428571429x + 0.5102040819 + x2 = -12.14285714 + 0.5102040819

Reorder the terms:
0.5102040819 + -1.428571429x + x2 = -12.14285714 + 0.5102040819

Combine like terms: -12.14285714 + 0.5102040819 = -11.6326530581
0.5102040819 + -1.428571429x + x2 = -11.6326530581

Factor a perfect square on the left side:
(x + -0.7142857145)(x + -0.7142857145) = -11.6326530581

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2(7x+5)=2(3x+7)+4(2x-1) | | 7x^0-10x+85=0 | | Y=x-k | | 3(x/8)=(-2) | | Y=x+k | | (2x)/(9-x^(2))0 | | 5/6*22/3 | | (12x+24)-(15x+18)= | | 2x*y=64 | | 8.5-3x^2=3.5x+2x^2 | | 8.5-3x^2=3.5x+2x | | 1/2z=3z-4/5 | | B-(90.77)=48.57 | | x+19=170 | | (76.02-70.5)+c=3.4 | | 2(3y-5)=2y+6 | | (76.2-70.5)+c=3.4 | | 33m+25=31.6 | | 3x-4/2=-6 | | X^2+8x+100=200 | | 3a-8=a+8 | | 3x+5x+x=81 | | 7w+6-w=9w-2(w-3) | | -4y+4=-4y-4 | | 8-(4v+6)=4v-2 | | 6x=-9x+5 | | 5b-6=15-2b | | 2*z=x*y | | 5y-6y=9 | | (5x-3)(3x+2)=0 | | 6(8+x)=48 | | x^3-2x^2-11x+24=0 |

Equations solver categories