2x^2-3x-5=2

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


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

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

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

Solving for variable 'x'.

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

Combine like terms: -5 + -2 = -7
-7 + -3x + 2x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-7 + -3x + 2x2 = 0

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

Divide each side by '2'.
-3.5 + -1.5x + x2 = 0

Move the constant term to the right:

Add '3.5' to each side of the equation.
-3.5 + -1.5x + 3.5 + x2 = 0 + 3.5

Reorder the terms:
-3.5 + 3.5 + -1.5x + x2 = 0 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + -1.5x + x2 = 0 + 3.5
-1.5x + x2 = 0 + 3.5

Combine like terms: 0 + 3.5 = 3.5
-1.5x + x2 = 3.5

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 3.5 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 3.5 + 0.5625

Combine like terms: 3.5 + 0.5625 = 4.0625
0.5625 + -1.5x + x2 = 4.0625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(x + -0.75) equal to 2.015564437 and -2.015564437.

Subproblem 1

x + -0.75 = 2.015564437 Simplifying x + -0.75 = 2.015564437 Reorder the terms: -0.75 + x = 2.015564437 Solving -0.75 + x = 2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 2.015564437 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 2.015564437 + 0.75 x = 2.015564437 + 0.75 Combine like terms: 2.015564437 + 0.75 = 2.765564437 x = 2.765564437 Simplifying x = 2.765564437

Subproblem 2

x + -0.75 = -2.015564437 Simplifying x + -0.75 = -2.015564437 Reorder the terms: -0.75 + x = -2.015564437 Solving -0.75 + x = -2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -2.015564437 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -2.015564437 + 0.75 x = -2.015564437 + 0.75 Combine like terms: -2.015564437 + 0.75 = -1.265564437 x = -1.265564437 Simplifying x = -1.265564437

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.765564437, -1.265564437}

See similar equations:

| 11x+(-1)=24+12x+13 | | X/1.8=2.5/3.6 | | 14x^4y/2x^3y^5=0 | | c=7.28 | | 14x^4y/2x^3y^5 | | (5/5x)-(6x-6y/3xy^2) | | f(p)=(p^5+6p^4-8p^2+3) | | x+6x=26+2y-y | | y-7/8-1/4 | | 3g/7t=1.5 | | 10-6n-n=-6n+6-2 | | 3g/7t=150/100 | | Y/-18=3 | | (1/2)x=16=0 | | -116=za | | H/-64=1 | | 5y-3y=8-12 | | -5/x-7-5 | | -24X+12=-67 | | 1/50=x/3 | | 84.5=13x | | 10/21/2/9= | | 17-10a=5a+17 | | 1+2(x-2x)=15 | | 8(x-4)-2=6x-3x+1 | | 3(3u-4)-(u+6)= | | x+.0765x=6300 | | -(6w-2u-3)= | | 2p(p+1)+2p(p+1)=8 | | y-7=1/10(x-10) | | N-3(3a)=8+57 | | 6(x+1)-2=4(x+3)+2(x-4) |

Equations solver categories