8x^2-48x+15=0

Simple and best practice solution for 8x^2-48x+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 8x^2-48x+15=0 equation:


Simplifying
8x2 + -48x + 15 = 0

Reorder the terms:
15 + -48x + 8x2 = 0

Solving
15 + -48x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
1.875 + -6x + x2 = 0

Move the constant term to the right:

Add '-1.875' to each side of the equation.
1.875 + -6x + -1.875 + x2 = 0 + -1.875

Reorder the terms:
1.875 + -1.875 + -6x + x2 = 0 + -1.875

Combine like terms: 1.875 + -1.875 = 0.000
0.000 + -6x + x2 = 0 + -1.875
-6x + x2 = 0 + -1.875

Combine like terms: 0 + -1.875 = -1.875
-6x + x2 = -1.875

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -1.875 + 9

Reorder the terms:
9 + -6x + x2 = -1.875 + 9

Combine like terms: -1.875 + 9 = 7.125
9 + -6x + x2 = 7.125

Factor a perfect square on the left side:
(x + -3)(x + -3) = 7.125

Calculate the square root of the right side: 2.669269563

Break this problem into two subproblems by setting 
(x + -3) equal to 2.669269563 and -2.669269563.

Subproblem 1

x + -3 = 2.669269563 Simplifying x + -3 = 2.669269563 Reorder the terms: -3 + x = 2.669269563 Solving -3 + x = 2.669269563 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 2.669269563 + 3 Combine like terms: -3 + 3 = 0 0 + x = 2.669269563 + 3 x = 2.669269563 + 3 Combine like terms: 2.669269563 + 3 = 5.669269563 x = 5.669269563 Simplifying x = 5.669269563

Subproblem 2

x + -3 = -2.669269563 Simplifying x + -3 = -2.669269563 Reorder the terms: -3 + x = -2.669269563 Solving -3 + x = -2.669269563 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -2.669269563 + 3 Combine like terms: -3 + 3 = 0 0 + x = -2.669269563 + 3 x = -2.669269563 + 3 Combine like terms: -2.669269563 + 3 = 0.330730437 x = 0.330730437 Simplifying x = 0.330730437

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.669269563, 0.330730437}

See similar equations:

| 8(4-2x)=7x+2 | | n=0.1t^4+3.16t^3-23.06t^2+214.8t | | 70+90x=90+8x | | (a^5b^3/a^10b^2)^3 | | 6x-4+3x=8x-7 | | 120+0.8(y-400)+200+400= | | 8p^5/2p^-3 | | 78x+22y=100forx | | 2x^3-3x^2-120x+9=0 | | .75Y+325= | | 20-4x=16+3x | | ax=ab-bx | | ln^2x=9 | | 4.20=1.05+v | | 2/v=9 | | y(3+7-x)= | | 7/tan40 | | 5(x^2+1)=9x^2-10x-1 | | F(x)=49/15x-13 | | (3x+1)=24 | | 4mb=p*7656mb | | 420=v+1.05 | | R*X/2-P=0 | | 7656m=p*4m | | 6x+32z+9z=47forx | | s=bx-bc-cx | | -4(a+6)=4(a-4) | | 64x^4-10x^2-3a=0 | | 16=-14-6x | | 10w=3100 | | x^2+y^2=2016 | | 2(15+m)= |

Equations solver categories