-3x^2-6x=-1

Simple and best practice solution for -3x^2-6x=-1 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=-1 equation:


Simplifying
-3x2 + -6x = -1

Reorder the terms:
-6x + -3x2 = -1

Solving
-6x + -3x2 = -1

Solving for variable 'x'.

Reorder the terms:
1 + -6x + -3x2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + -6x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-0.3333333333 + 2x + x2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + 2x + 0.3333333333 + x2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + 2x + x2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + 2x + x2 = 0 + 0.3333333333
2x + x2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
2x + x2 = 0.3333333333

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 = 0.3333333333 + 1

Reorder the terms:
1 + 2x + x2 = 0.3333333333 + 1

Combine like terms: 0.3333333333 + 1 = 1.3333333333
1 + 2x + x2 = 1.3333333333

Factor a perfect square on the left side:
(x + 1)(x + 1) = 1.3333333333

Calculate the square root of the right side: 1.154700538

Break this problem into two subproblems by setting 
(x + 1) equal to 1.154700538 and -1.154700538.

Subproblem 1

x + 1 = 1.154700538 Simplifying x + 1 = 1.154700538 Reorder the terms: 1 + x = 1.154700538 Solving 1 + x = 1.154700538 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 = 1.154700538 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.154700538 + -1 x = 1.154700538 + -1 Combine like terms: 1.154700538 + -1 = 0.154700538 x = 0.154700538 Simplifying x = 0.154700538

Subproblem 2

x + 1 = -1.154700538 Simplifying x + 1 = -1.154700538 Reorder the terms: 1 + x = -1.154700538 Solving 1 + x = -1.154700538 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 = -1.154700538 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.154700538 + -1 x = -1.154700538 + -1 Combine like terms: -1.154700538 + -1 = -2.154700538 x = -2.154700538 Simplifying x = -2.154700538

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.154700538, -2.154700538}

See similar equations:

| 5[3x+2]=-5 | | 43-56x+67-4y= | | Y=(x-6)(x-2) | | 13x+41=14 | | 4[2x-2]=152 | | x-7=5x+5 | | 5-3x=(x+1) | | 14=9x-4 | | y=3+4x-2x^2 | | 3y-22=17 | | p^2=-13p-40 | | 4x^2+10x-10x-25=5 | | 2x-1=14x-52 | | (1/4)x+(1/2)=(1/8)x-(1/3) | | 4x+38=14x+5 | | b^2=20-b | | y-2x^2=4x+3 | | n^2-n=54 | | (4/5)b-4=(-9/10)b+1 | | 4x^2-0x-30=0 | | y=-x^2-7x+18 | | 1/4(y+8)+5 | | y+5x^2=4+x | | 77/9+95/9 | | 72=1.76x^2-13.32x+41 | | 182=1.76x^2-13.32x+41 | | 24=1.76x^2-13.32x+41 | | n^2+1=14n | | n/-8=-3/8 | | 5(-2+x)=6x+1/5 | | 18=1.76x^2-13.32x+41 | | Xx(X+3)=154 |

Equations solver categories