2x^2-5x-3=1

Simple and best practice solution for 2x^2-5x-3=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 2x^2-5x-3=1 equation:


Simplifying
2x2 + -5x + -3 = 1

Reorder the terms:
-3 + -5x + 2x2 = 1

Solving
-3 + -5x + 2x2 = 1

Solving for variable 'x'.

Reorder the terms:
-3 + -1 + -5x + 2x2 = 1 + -1

Combine like terms: -3 + -1 = -4
-4 + -5x + 2x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-4 + -5x + 2x2 = 0

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

Divide each side by '2'.
-2 + -2.5x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -2.5x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -2.5x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -2.5x + x2 = 0 + 2
-2.5x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-2.5x + x2 = 2

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = 2 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = 2 + 1.5625

Combine like terms: 2 + 1.5625 = 3.5625
1.5625 + -2.5x + x2 = 3.5625

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1.887458609 and -1.887458609.

Subproblem 1

x + -1.25 = 1.887458609 Simplifying x + -1.25 = 1.887458609 Reorder the terms: -1.25 + x = 1.887458609 Solving -1.25 + x = 1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 1.887458609 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.887458609 + 1.25 x = 1.887458609 + 1.25 Combine like terms: 1.887458609 + 1.25 = 3.137458609 x = 3.137458609 Simplifying x = 3.137458609

Subproblem 2

x + -1.25 = -1.887458609 Simplifying x + -1.25 = -1.887458609 Reorder the terms: -1.25 + x = -1.887458609 Solving -1.25 + x = -1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -1.887458609 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.887458609 + 1.25 x = -1.887458609 + 1.25 Combine like terms: -1.887458609 + 1.25 = -0.637458609 x = -0.637458609 Simplifying x = -0.637458609

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.137458609, -0.637458609}

See similar equations:

| -1/2n-4=6 | | 4x-17=33 | | 3x+17=5x+15x | | 6y-2(y+1)=3(y-1)-2 | | -7-24-40m=7+2m | | -7n-32n-4=-26+3n | | 12+24x=6x-6 | | 3x^2-36x+18=0 | | 3x^4+8x^3-18x^2+5=0 | | 3=x+7+6x | | 144=12r | | x+2x=8.944 | | 3x-6=y-3 | | 5/8x5/4 | | -12-8n=-42n-12 | | 12x^3+24x^2-36=0 | | 3x^3+24x^2-36=0 | | 3/4x15/2 | | 18n-10-14n= | | 3/4x7/4 | | -8-4x=32+16x | | 5(x-9)2=720 | | 0.25x-6=-1 | | -1/2x-2 | | 9(x-3)2+441=0 | | 7x-1.8=3.1 | | 3(x-2)2-972=0 | | 4x+6=8-(2x-6) | | 2/3x6/8 | | -13-2n+3n=6n+8n | | 5(x-1.9)=4.5 | | 2/3x7/4 |

Equations solver categories