.3x^2-.6x-.3=

Simple and best practice solution for .3x^2-.6x-.3= 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 .3x^2-.6x-.3= equation:


Simplifying
0.3x2 + -0.6x + -0.3 = 0

Reorder the terms:
-0.3 + -0.6x + 0.3x2 = 0

Solving
-0.3 + -0.6x + 0.3x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.3'.
-1 + -2x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -2x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -2x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -2x + x2 = 0 + 1
-2x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-2x + x2 = 1

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 1 + 1

Reorder the terms:
1 + -2x + x2 = 1 + 1

Combine like terms: 1 + 1 = 2
1 + -2x + x2 = 2

Factor a perfect square on the left side:
(x + -1)(x + -1) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + -1) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + -1 = 1.414213562 Simplifying x + -1 = 1.414213562 Reorder the terms: -1 + x = 1.414213562 Solving -1 + x = 1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 1.414213562 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.414213562 + 1 x = 1.414213562 + 1 Combine like terms: 1.414213562 + 1 = 2.414213562 x = 2.414213562 Simplifying x = 2.414213562

Subproblem 2

x + -1 = -1.414213562 Simplifying x + -1 = -1.414213562 Reorder the terms: -1 + x = -1.414213562 Solving -1 + x = -1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -1.414213562 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.414213562 + 1 x = -1.414213562 + 1 Combine like terms: -1.414213562 + 1 = -0.414213562 x = -0.414213562 Simplifying x = -0.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.414213562, -0.414213562}

See similar equations:

| 4/7y=6 | | 9+6(x-4)=11-2(x-2) | | 5-2(x+3)=2x-(4+3x) | | 8w-3-5w=3w+7 | | y-5=8x-56 | | [36-(9-3)]-[(5-2)(5-2)(5-2)]= | | y-5=8x-40 | | 8x-11+3x=15 | | 5(5-3/4y)-7Y=-18 | | 5x+8+3x=3+2x+5 | | y-5=9x-54 | | [36-(9-3)]-(5-2)3= | | 9+5n-1=5n+14-2n | | 2r+6=12r+11 | | x^2+4x-29=0 | | 7/x-5 | | 8r+7=38r+13 | | 3-9x= | | 4(5x+1)-x+5= | | -6(v+4)+2v+7=7v+7 | | 2x+6=10x+70 | | 27+9/8r=-27 | | x^3+7=22 | | 3+5x=5+3x | | 5x+22=8x+16 | | 2M3N-6/10M2N3 | | (12u^6-15u^5)/(3u^2) | | 2(X+1)=2/3X+9 | | 5(x-6)-(7x+2)=-12 | | 7x+74=(3x+6)(3x+6) | | 2y^2-y-21=0 | | -9(v+4)+2v+7=8v+10 |

Equations solver categories