4x^2-12x+x-8=0

Simple and best practice solution for 4x^2-12x+x-8=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 4x^2-12x+x-8=0 equation:


Simplifying
4x2 + -12x + x + -8 = 0

Reorder the terms:
-8 + -12x + x + 4x2 = 0

Combine like terms: -12x + x = -11x
-8 + -11x + 4x2 = 0

Solving
-8 + -11x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-2 + -2.75x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -2.75x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -2.75x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -2.75x + x2 = 0 + 2
-2.75x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-2.75x + x2 = 2

The x term is -2.75x.  Take half its coefficient (-1.375).
Square it (1.890625) and add it to both sides.

Add '1.890625' to each side of the equation.
-2.75x + 1.890625 + x2 = 2 + 1.890625

Reorder the terms:
1.890625 + -2.75x + x2 = 2 + 1.890625

Combine like terms: 2 + 1.890625 = 3.890625
1.890625 + -2.75x + x2 = 3.890625

Factor a perfect square on the left side:
(x + -1.375)(x + -1.375) = 3.890625

Calculate the square root of the right side: 1.97246673

Break this problem into two subproblems by setting 
(x + -1.375) equal to 1.97246673 and -1.97246673.

Subproblem 1

x + -1.375 = 1.97246673 Simplifying x + -1.375 = 1.97246673 Reorder the terms: -1.375 + x = 1.97246673 Solving -1.375 + x = 1.97246673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = 1.97246673 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = 1.97246673 + 1.375 x = 1.97246673 + 1.375 Combine like terms: 1.97246673 + 1.375 = 3.34746673 x = 3.34746673 Simplifying x = 3.34746673

Subproblem 2

x + -1.375 = -1.97246673 Simplifying x + -1.375 = -1.97246673 Reorder the terms: -1.375 + x = -1.97246673 Solving -1.375 + x = -1.97246673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.375' to each side of the equation. -1.375 + 1.375 + x = -1.97246673 + 1.375 Combine like terms: -1.375 + 1.375 = 0.000 0.000 + x = -1.97246673 + 1.375 x = -1.97246673 + 1.375 Combine like terms: -1.97246673 + 1.375 = -0.59746673 x = -0.59746673 Simplifying x = -0.59746673

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.34746673, -0.59746673}

See similar equations:

| 5-6(x+1)=17 | | 8(t+2)+5(5t+2)=32(t+1)+6 | | 8(x-4)-16=10(x-7) | | 2(x-1)-3(x-4)=11 | | 15=3n+6n | | -3w-5z=7 | | 2[x-(3x+1)]=4-2x | | x^3-8x^2+3x-24= | | 7(m-2)+2(9-5M)=-4(m-3)+2 | | 5w+4z=10 | | 3(x+2)-4=x-8 | | .33(2x-4)+5=-.67(x+1) | | x+11-3x=-1 | | 4(z-1)-(5-6z)=9z | | x+11-3x=1 | | 8xy-20x+6y-15=0 | | Y=4x^2+7x-15 | | 81x^3-375y^3= | | 5-3(2n-3)=49 | | 3m-6-2m=3 | | 5-3(2n-3)=48 | | -2y-5y= | | 81x^3-37y^3= | | 6(x-9)=7x-9 | | 5(x-4)+3(x-4)=0 | | 4y+12=9x | | c+ax=dx | | 57=35x | | t=0 | | 8+7x-x^2= | | 5x-3=7x-3x | | 3x^3+15x^2-18x= |

Equations solver categories