-3x^2+6x=-5

Simple and best practice solution for -3x^2+6x=-5 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=-5 equation:


Simplifying
-3x2 + 6x = -5

Reorder the terms:
6x + -3x2 = -5

Solving
6x + -3x2 = -5

Solving for variable 'x'.

Reorder the terms:
5 + 6x + -3x2 = -5 + 5

Combine like terms: -5 + 5 = 0
5 + 6x + -3x2 = 0

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

Divide each side by '-3'.
-1.666666667 + -2x + x2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + -2x + 1.666666667 + x2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + -2x + x2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + -2x + x2 = 0 + 1.666666667
-2x + x2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
-2x + x2 = 1.666666667

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 = 1.666666667 + 1

Reorder the terms:
1 + -2x + x2 = 1.666666667 + 1

Combine like terms: 1.666666667 + 1 = 2.666666667
1 + -2x + x2 = 2.666666667

Factor a perfect square on the left side:
(x + -1)(x + -1) = 2.666666667

Calculate the square root of the right side: 1.632993162

Break this problem into two subproblems by setting 
(x + -1) equal to 1.632993162 and -1.632993162.

Subproblem 1

x + -1 = 1.632993162 Simplifying x + -1 = 1.632993162 Reorder the terms: -1 + x = 1.632993162 Solving -1 + x = 1.632993162 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 = 1.632993162 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.632993162 + 1 x = 1.632993162 + 1 Combine like terms: 1.632993162 + 1 = 2.632993162 x = 2.632993162 Simplifying x = 2.632993162

Subproblem 2

x + -1 = -1.632993162 Simplifying x + -1 = -1.632993162 Reorder the terms: -1 + x = -1.632993162 Solving -1 + x = -1.632993162 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 = -1.632993162 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.632993162 + 1 x = -1.632993162 + 1 Combine like terms: -1.632993162 + 1 = -0.632993162 x = -0.632993162 Simplifying x = -0.632993162

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.632993162, -0.632993162}

See similar equations:

| -.35=x-0.5x | | 5-3y=9-7y+4y | | 3x^2+8=-4x | | 8b+2=9 | | 54/27 | | 33z+28z^2-28= | | -5x-18=132 | | -4(1-3n)-5=51 | | 6x+4=3x+12 | | (1x(72-(17+30)))+14= | | -2x-(-3x-2)=-1 | | .25x+4x(.10)=14.95 | | (1*(72-(17+30)))+14= | | 3=6/2x | | 6x-6(4x-24)=0 | | x+5=0.5 | | 6x-6(4x-24)=y | | 2x+3+x=-3 | | s=5t+50 | | 2x+12=67 | | 38=21-4c | | 6.8=3n | | 56x^2+53x+12= | | 3x^2+4x+6=y | | sin22=x/15 | | 400y=4x+8 | | -3x-3(8x+22)=15 | | 127(2x+41)= | | logx(1/8)=(-1/2) | | 25x^2-4=12 | | 5x-23=4x+7 | | 2+y=3-2[1-2(y+1)] |

Equations solver categories