x^2-17x+15=0

Simple and best practice solution for x^2-17x+15=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 x^2-17x+15=0 equation:


Simplifying
x2 + -17x + 15 = 0

Reorder the terms:
15 + -17x + x2 = 0

Solving
15 + -17x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + -17x + -15 + x2 = 0 + -15

Reorder the terms:
15 + -15 + -17x + x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -17x + x2 = 0 + -15
-17x + x2 = 0 + -15

Combine like terms: 0 + -15 = -15
-17x + x2 = -15

The x term is -17x.  Take half its coefficient (-8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
-17x + 72.25 + x2 = -15 + 72.25

Reorder the terms:
72.25 + -17x + x2 = -15 + 72.25

Combine like terms: -15 + 72.25 = 57.25
72.25 + -17x + x2 = 57.25

Factor a perfect square on the left side:
(x + -8.5)(x + -8.5) = 57.25

Calculate the square root of the right side: 7.566372975

Break this problem into two subproblems by setting 
(x + -8.5) equal to 7.566372975 and -7.566372975.

Subproblem 1

x + -8.5 = 7.566372975 Simplifying x + -8.5 = 7.566372975 Reorder the terms: -8.5 + x = 7.566372975 Solving -8.5 + x = 7.566372975 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = 7.566372975 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = 7.566372975 + 8.5 x = 7.566372975 + 8.5 Combine like terms: 7.566372975 + 8.5 = 16.066372975 x = 16.066372975 Simplifying x = 16.066372975

Subproblem 2

x + -8.5 = -7.566372975 Simplifying x + -8.5 = -7.566372975 Reorder the terms: -8.5 + x = -7.566372975 Solving -8.5 + x = -7.566372975 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = -7.566372975 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = -7.566372975 + 8.5 x = -7.566372975 + 8.5 Combine like terms: -7.566372975 + 8.5 = 0.933627025 x = 0.933627025 Simplifying x = 0.933627025

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.066372975, 0.933627025}

See similar equations:

| -4(n-8)+6=26 | | 3(x-a)=2b+4x+a | | 9x*2=49 | | 3+x=26 | | (2/x+5)-(3/x-4)=(6/x) | | 5a+5b-9(2a-4b)= | | 2=log(9)(x-2)-log(9)(2x-5) | | -27+4=33y-3 | | 0.45x+0.05(18-x)=0.10(1) | | 45+x=94 | | 5x-3x[7-6(X+9)]= | | .05x+.04(x-1500)=165 | | 2/x+5-3/x-4=6/x | | 7-3y=-10 | | (6v-4)2= | | 20(y-7)= | | 6(4-a)+3a=4a-4 | | X+24=35 | | 2h-9=2h+3 | | 303-90=f | | 2(w+3)+5=2w+6+5 | | y*dx+(x-3x^3y^2)*dy=0 | | x^2=-a | | ydx+(x-3x^3y^2)dy=0 | | -16+-5n=-7(-6+8n)+3 | | 2(w+3)+55=2w+6+5 | | Y-9=-24 | | ydx+x(1-3x^2y^2)dy=0 | | 5p-8-p= | | 5(2u-9)=g | | 3x-12=5x+4 | | x^4-2x^3+x^2-9=0 |

Equations solver categories