9x^2-40x+64=0

Simple and best practice solution for 9x^2-40x+64=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 9x^2-40x+64=0 equation:


Simplifying
9x2 + -40x + 64 = 0

Reorder the terms:
64 + -40x + 9x2 = 0

Solving
64 + -40x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
7.111111111 + -4.444444444x + x2 = 0

Move the constant term to the right:

Add '-7.111111111' to each side of the equation.
7.111111111 + -4.444444444x + -7.111111111 + x2 = 0 + -7.111111111

Reorder the terms:
7.111111111 + -7.111111111 + -4.444444444x + x2 = 0 + -7.111111111

Combine like terms: 7.111111111 + -7.111111111 = 0.000000000
0.000000000 + -4.444444444x + x2 = 0 + -7.111111111
-4.444444444x + x2 = 0 + -7.111111111

Combine like terms: 0 + -7.111111111 = -7.111111111
-4.444444444x + x2 = -7.111111111

The x term is -4.444444444x.  Take half its coefficient (-2.222222222).
Square it (4.938271604) and add it to both sides.

Add '4.938271604' to each side of the equation.
-4.444444444x + 4.938271604 + x2 = -7.111111111 + 4.938271604

Reorder the terms:
4.938271604 + -4.444444444x + x2 = -7.111111111 + 4.938271604

Combine like terms: -7.111111111 + 4.938271604 = -2.172839507
4.938271604 + -4.444444444x + x2 = -2.172839507

Factor a perfect square on the left side:
(x + -2.222222222)(x + -2.222222222) = -2.172839507

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 11x=10x-10 | | 28=-7(2x-3) | | 4x+32=40 | | 2x+-59=10 | | t/4-2=6 | | 3(x-2)+2(x-2)=40 | | 2x(3x-2)=0 | | 3(4z+1)=21 | | 4x-6x+2x-7x= | | -p+1=-14 | | 12g-14+5g=8g-3+7 | | 2x^3+12x^2-8=0 | | 13=y-16 | | 25x^2-75x-250=0 | | 4n-2=38 | | 6x+12-2x=2x+36 | | 32.8=y-47.8 | | -10=12n+14 | | 25x^2-20xy+4y^2= | | 11=y-23 | | -16+x=15 | | 3x+4=2x-5 | | 24b-22=-4(16b) | | 50+8x-69=-4 | | 15=-5(x-4) | | 5x+4(1x+3)=66 | | x/4-5=-7 | | -(d-4)=13 | | 6k-4=3(k-5) | | x^2-18x-9=0 | | X-81-21x=1 | | 3x^2-16x-75=0 |

Equations solver categories