9x^2-17x+7=0

Simple and best practice solution for 9x^2-17x+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 9x^2-17x+7=0 equation:


Simplifying
9x2 + -17x + 7 = 0

Reorder the terms:
7 + -17x + 9x2 = 0

Solving
7 + -17x + 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'.
0.7777777778 + -1.888888889x + x2 = 0

Move the constant term to the right:

Add '-0.7777777778' to each side of the equation.
0.7777777778 + -1.888888889x + -0.7777777778 + x2 = 0 + -0.7777777778

Reorder the terms:
0.7777777778 + -0.7777777778 + -1.888888889x + x2 = 0 + -0.7777777778

Combine like terms: 0.7777777778 + -0.7777777778 = 0.0000000000
0.0000000000 + -1.888888889x + x2 = 0 + -0.7777777778
-1.888888889x + x2 = 0 + -0.7777777778

Combine like terms: 0 + -0.7777777778 = -0.7777777778
-1.888888889x + x2 = -0.7777777778

The x term is -1.888888889x.  Take half its coefficient (-0.9444444445).
Square it (0.8919753087) and add it to both sides.

Add '0.8919753087' to each side of the equation.
-1.888888889x + 0.8919753087 + x2 = -0.7777777778 + 0.8919753087

Reorder the terms:
0.8919753087 + -1.888888889x + x2 = -0.7777777778 + 0.8919753087

Combine like terms: -0.7777777778 + 0.8919753087 = 0.1141975309
0.8919753087 + -1.888888889x + x2 = 0.1141975309

Factor a perfect square on the left side:
(x + -0.9444444445)(x + -0.9444444445) = 0.1141975309

Calculate the square root of the right side: 0.337931252

Break this problem into two subproblems by setting 
(x + -0.9444444445) equal to 0.337931252 and -0.337931252.

Subproblem 1

x + -0.9444444445 = 0.337931252 Simplifying x + -0.9444444445 = 0.337931252 Reorder the terms: -0.9444444445 + x = 0.337931252 Solving -0.9444444445 + x = 0.337931252 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9444444445' to each side of the equation. -0.9444444445 + 0.9444444445 + x = 0.337931252 + 0.9444444445 Combine like terms: -0.9444444445 + 0.9444444445 = 0.0000000000 0.0000000000 + x = 0.337931252 + 0.9444444445 x = 0.337931252 + 0.9444444445 Combine like terms: 0.337931252 + 0.9444444445 = 1.2823756965 x = 1.2823756965 Simplifying x = 1.2823756965

Subproblem 2

x + -0.9444444445 = -0.337931252 Simplifying x + -0.9444444445 = -0.337931252 Reorder the terms: -0.9444444445 + x = -0.337931252 Solving -0.9444444445 + x = -0.337931252 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9444444445' to each side of the equation. -0.9444444445 + 0.9444444445 + x = -0.337931252 + 0.9444444445 Combine like terms: -0.9444444445 + 0.9444444445 = 0.0000000000 0.0000000000 + x = -0.337931252 + 0.9444444445 x = -0.337931252 + 0.9444444445 Combine like terms: -0.337931252 + 0.9444444445 = 0.6065131925 x = 0.6065131925 Simplifying x = 0.6065131925

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.2823756965, 0.6065131925}

See similar equations:

| 30+v=7v | | 4(n-2)=-1-(-7n-2) | | 6(x-4)=-36 | | 2m^2-9m+9= | | x-4(2x+3)=2 | | x-3=x^2-10x+16 | | -5(-x-8)=2(2+2x)-5x | | (4+3)(3)=(x)(x) | | Log(2x+15)=2 | | 4(x-8)+14=2(x-4) | | 2x*4=7x-8/3 | | -11x-200=76+12x | | 5(4+5)=20+25 | | 4x-4=6x-10 | | 4x-4=x+4 | | 6y-4=180 | | 25=-5(1-6x) | | x^2-12-14=0 | | 8+12x+3(2x+3)= | | 100=4x(x) | | 6n^2-n-15= | | 2x•4=7x-8/3 | | 2(-4x+2)-5x=43 | | 36=x/3 | | (68-32)x5/9 | | -4x-5=-37 | | I-1+xI=5 | | 75*2x=100 | | 75*2x= | | 1-2p=-3-6p | | log2/(log1.1) | | y=3x^2+2 |

Equations solver categories