2x^2-5x-4.5=0

Simple and best practice solution for 2x^2-5x-4.5=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 2x^2-5x-4.5=0 equation:


Simplifying
2x2 + -5x + -4.5 = 0

Reorder the terms:
-4.5 + -5x + 2x2 = 0

Solving
-4.5 + -5x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-2.25 + -2.5x + x2 = 0

Move the constant term to the right:

Add '2.25' to each side of the equation.
-2.25 + -2.5x + 2.25 + x2 = 0 + 2.25

Reorder the terms:
-2.25 + 2.25 + -2.5x + x2 = 0 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
0.00 + -2.5x + x2 = 0 + 2.25
-2.5x + x2 = 0 + 2.25

Combine like terms: 0 + 2.25 = 2.25
-2.5x + x2 = 2.25

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 = 2.25 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = 2.25 + 1.5625

Combine like terms: 2.25 + 1.5625 = 3.8125
1.5625 + -2.5x + x2 = 3.8125

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 3.8125

Calculate the square root of the right side: 1.952562419

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1.952562419 and -1.952562419.

Subproblem 1

x + -1.25 = 1.952562419 Simplifying x + -1.25 = 1.952562419 Reorder the terms: -1.25 + x = 1.952562419 Solving -1.25 + x = 1.952562419 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 = 1.952562419 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.952562419 + 1.25 x = 1.952562419 + 1.25 Combine like terms: 1.952562419 + 1.25 = 3.202562419 x = 3.202562419 Simplifying x = 3.202562419

Subproblem 2

x + -1.25 = -1.952562419 Simplifying x + -1.25 = -1.952562419 Reorder the terms: -1.25 + x = -1.952562419 Solving -1.25 + x = -1.952562419 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 = -1.952562419 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.952562419 + 1.25 x = -1.952562419 + 1.25 Combine like terms: -1.952562419 + 1.25 = -0.702562419 x = -0.702562419 Simplifying x = -0.702562419

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.202562419, -0.702562419}

See similar equations:

| 2y+3=4-7y | | -2/5(10x-15)=30 | | 6x(-12)=-72 | | 4e+7e-5= | | 1*7/8 | | x=ln[(x^2+1)2x+1] | | x=ln[(x^2+1)(2x+1)] | | f(x)=ln[(x^2+1)(2x+1)] | | 9+19=21 | | 3x^2+18=5x^2 | | 5x+3y=15.23 | | x^3-8x^2-29x+100=0 | | B=(x-1)*(4x*x+5)-(x-1)*(x-1) | | (a+b)(a^2+2ab+b^2)=27 | | B=4x-1*-3x | | A=8x-5 | | 6Z-1=4Z+1 | | 18a+17b+4c+5c-2b-2a= | | 10m+6n-5m+7n= | | 12x-3x+4=85 | | (8-2)^2/4*5-2 | | C=1/3g*p | | -2x+22=2(x+7) | | -5(x-5)=-2x+13 | | 5(5-4x)=6(5-8x) | | x-4/9x-36 | | T=24+5 | | T=2v+5 | | 40n+(10*1.5n)=75000 | | 2x+4xy=mxb | | n+(1.5n)=75 | | N+(n*1.5)=75 |

Equations solver categories