-3x^2-5x-2=-5

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


Simplifying
-3x2 + -5x + -2 = -5

Reorder the terms:
-2 + -5x + -3x2 = -5

Solving
-2 + -5x + -3x2 = -5

Solving for variable 'x'.

Reorder the terms:
-2 + 5 + -5x + -3x2 = -5 + 5

Combine like terms: -2 + 5 = 3
3 + -5x + -3x2 = -5 + 5

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

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

Divide each side by '-3'.
-1 + 1.666666667x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 1.666666667x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 1.666666667x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 1.666666667x + x2 = 0 + 1
1.666666667x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
1.666666667x + x2 = 1

The x term is 1.666666667x.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x + 0.6944444447 + x2 = 1 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x + x2 = 1 + 0.6944444447

Combine like terms: 1 + 0.6944444447 = 1.6944444447
0.6944444447 + 1.666666667x + x2 = 1.6944444447

Factor a perfect square on the left side:
(x + 0.8333333335)(x + 0.8333333335) = 1.6944444447

Calculate the square root of the right side: 1.301708279

Break this problem into two subproblems by setting 
(x + 0.8333333335) equal to 1.301708279 and -1.301708279.

Subproblem 1

x + 0.8333333335 = 1.301708279 Simplifying x + 0.8333333335 = 1.301708279 Reorder the terms: 0.8333333335 + x = 1.301708279 Solving 0.8333333335 + x = 1.301708279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = 1.301708279 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = 1.301708279 + -0.8333333335 x = 1.301708279 + -0.8333333335 Combine like terms: 1.301708279 + -0.8333333335 = 0.4683749455 x = 0.4683749455 Simplifying x = 0.4683749455

Subproblem 2

x + 0.8333333335 = -1.301708279 Simplifying x + 0.8333333335 = -1.301708279 Reorder the terms: 0.8333333335 + x = -1.301708279 Solving 0.8333333335 + x = -1.301708279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = -1.301708279 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = -1.301708279 + -0.8333333335 x = -1.301708279 + -0.8333333335 Combine like terms: -1.301708279 + -0.8333333335 = -2.1350416125 x = -2.1350416125 Simplifying x = -2.1350416125

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4683749455, -2.1350416125}

See similar equations:

| 4(x-4)+14=2(8-2x)+6 | | 3p+9=16+2p | | 3(2w+7)=3 | | 15=7.3333333+t | | 14[8+5(x-10)]= | | 0.4r-1.2=0.3+0.6 | | 3.8x+5=2.8x | | 14x^2+11x-15=0 | | 8x+3=12+6x | | -12x+x^2=0 | | 6.6x+3=5.6x | | 33*0.44= | | 2(-10+4y)= | | -23=5(x-4) | | .7a+2=.3(4a+1) | | 12a^2-25ab*12b^2=0 | | 6x+4=5x | | 5-14+4x^2=0 | | x*2-1=0 | | 3+8[9-(8-2)]= | | (9x-3)(6x+9)=0 | | 2.2k-5=2(1.4x+3) | | 30x+4=25x-1 | | 20x^2-48x-5=0 | | 11+2q=2q+8 | | 2(a-1)=3(g+1) | | 7+I= | | x^2+3x-7=10 | | 2x-(3x+6)=17 | | 3s^2+6s+5=365 | | 5a-8=2a+7 | | 3.2+2.6=-23 |

Equations solver categories