-3x^2+5x+3=0

Simple and best practice solution for -3x^2+5x+3=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 -3x^2+5x+3=0 equation:


Simplifying
-3x2 + 5x + 3 = 0

Reorder the terms:
3 + 5x + -3x2 = 0

Solving
3 + 5x + -3x2 = 0

Solving for variable 'x'.

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 = 2.1350416125 x = 2.1350416125 Simplifying x = 2.1350416125

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 = -0.4683749455 x = -0.4683749455 Simplifying x = -0.4683749455

Solution

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

See similar equations:

| 4(c-8)=3(c-4) | | 3x+6=x+24 | | 0=3x^2+8x-12 | | 8x-6=7x+5 | | 6z-9=7z | | 0=3x^2+10x+15 | | 5x-6=35 | | -7(z+4)-(-4z-6)=-4z | | 5x^3+15x^2=20x | | 4d=28 | | 15y=2y-13 | | -3x+1=5 | | 3x-4x+2x-7+5x= | | 7c+2c= | | -4x+y=-13 | | 4x-8=3x+9 | | -0.8x+0.9x-8=9 | | -2x+3y=-7 | | 3x+3=-66 | | 113-2x=25x+20 | | x=1.5 | | 3b+7b=-20 | | 7-10x=69-24x | | -5x-2y=0 | | 4x^2+12x+10=0 | | 112-4x=14x+20 | | 4x+7=-58-9x | | 9+7x=14-6x | | x^3-2x^2+5x-10= | | 2x-3+4-6x=10-3x | | x+2=8-x | | x^2-2x-8x=0 |

Equations solver categories