8x^2+17x=9

Simple and best practice solution for 8x^2+17x=9 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 8x^2+17x=9 equation:


Simplifying
8x2 + 17x = 9

Reorder the terms:
17x + 8x2 = 9

Solving
17x + 8x2 = 9

Solving for variable 'x'.

Reorder the terms:
-9 + 17x + 8x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + 17x + 8x2 = 0

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

Divide each side by '8'.
-1.125 + 2.125x + x2 = 0

Move the constant term to the right:

Add '1.125' to each side of the equation.
-1.125 + 2.125x + 1.125 + x2 = 0 + 1.125

Reorder the terms:
-1.125 + 1.125 + 2.125x + x2 = 0 + 1.125

Combine like terms: -1.125 + 1.125 = 0.000
0.000 + 2.125x + x2 = 0 + 1.125
2.125x + x2 = 0 + 1.125

Combine like terms: 0 + 1.125 = 1.125
2.125x + x2 = 1.125

The x term is 2.125x.  Take half its coefficient (1.0625).
Square it (1.12890625) and add it to both sides.

Add '1.12890625' to each side of the equation.
2.125x + 1.12890625 + x2 = 1.125 + 1.12890625

Reorder the terms:
1.12890625 + 2.125x + x2 = 1.125 + 1.12890625

Combine like terms: 1.125 + 1.12890625 = 2.25390625
1.12890625 + 2.125x + x2 = 2.25390625

Factor a perfect square on the left side:
(x + 1.0625)(x + 1.0625) = 2.25390625

Calculate the square root of the right side: 1.501301519

Break this problem into two subproblems by setting 
(x + 1.0625) equal to 1.501301519 and -1.501301519.

Subproblem 1

x + 1.0625 = 1.501301519 Simplifying x + 1.0625 = 1.501301519 Reorder the terms: 1.0625 + x = 1.501301519 Solving 1.0625 + x = 1.501301519 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + x = 1.501301519 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + x = 1.501301519 + -1.0625 x = 1.501301519 + -1.0625 Combine like terms: 1.501301519 + -1.0625 = 0.438801519 x = 0.438801519 Simplifying x = 0.438801519

Subproblem 2

x + 1.0625 = -1.501301519 Simplifying x + 1.0625 = -1.501301519 Reorder the terms: 1.0625 + x = -1.501301519 Solving 1.0625 + x = -1.501301519 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + x = -1.501301519 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + x = -1.501301519 + -1.0625 x = -1.501301519 + -1.0625 Combine like terms: -1.501301519 + -1.0625 = -2.563801519 x = -2.563801519 Simplifying x = -2.563801519

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.438801519, -2.563801519}

See similar equations:

| 3(2x+4)=4(5x+2) | | 2(a-8.5)-2=3.1a+7.4 | | -3y-4=-103 | | 6X-3Y-9Y+2X+8= | | y=60(5) | | -2times+4=-5 | | 10(-2+5n)= | | 21(x^2-1)=40x | | In(8-3x)=6 | | -(2x-3)+4=-5x+2(3x+5)x | | -9(9+5b)= | | 18=-4.2x+6 | | 2(x-5)=9-3x+6+9+3x+7 | | -2b-7=99 | | 2x+2x+3=4x+2 | | 5n+14-2n=9-2(2n+1) | | 5n+14-22n=9-2(2n+1) | | -26-7=-99 | | 10n+25y=55z | | -8(1-3v)=37+9v | | -3(x-4)+x=2x-11 | | 4(2m-1)+7=8(m+1) | | -18+-6x=6+18x | | 5x^2+40x+5y^2+25y=0 | | 2/9/w/3 | | 8x+(-14y)+(-15x)+2= | | (-2)(-2)+5= | | (-2)x(-2)+5= | | 24x^2-83x+25=0 | | -(6x+6)-1=-5x-(x+7) | | 6v+6+v-3= | | 4x+9y-5=0 |

Equations solver categories