2u^2+3u-6=0

Simple and best practice solution for 2u^2+3u-6=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 2u^2+3u-6=0 equation:


Simplifying
2u2 + 3u + -6 = 0

Reorder the terms:
-6 + 3u + 2u2 = 0

Solving
-6 + 3u + 2u2 = 0

Solving for variable 'u'.

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

Divide each side by '2'.
-3 + 1.5u + u2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 1.5u + 3 + u2 = 0 + 3

Reorder the terms:
-3 + 3 + 1.5u + u2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 1.5u + u2 = 0 + 3
1.5u + u2 = 0 + 3

Combine like terms: 0 + 3 = 3
1.5u + u2 = 3

The u term is 1.5u.  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.
1.5u + 0.5625 + u2 = 3 + 0.5625

Reorder the terms:
0.5625 + 1.5u + u2 = 3 + 0.5625

Combine like terms: 3 + 0.5625 = 3.5625
0.5625 + 1.5u + u2 = 3.5625

Factor a perfect square on the left side:
(u + 0.75)(u + 0.75) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(u + 0.75) equal to 1.887458609 and -1.887458609.

Subproblem 1

u + 0.75 = 1.887458609 Simplifying u + 0.75 = 1.887458609 Reorder the terms: 0.75 + u = 1.887458609 Solving 0.75 + u = 1.887458609 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + u = 1.887458609 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + u = 1.887458609 + -0.75 u = 1.887458609 + -0.75 Combine like terms: 1.887458609 + -0.75 = 1.137458609 u = 1.137458609 Simplifying u = 1.137458609

Subproblem 2

u + 0.75 = -1.887458609 Simplifying u + 0.75 = -1.887458609 Reorder the terms: 0.75 + u = -1.887458609 Solving 0.75 + u = -1.887458609 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + u = -1.887458609 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + u = -1.887458609 + -0.75 u = -1.887458609 + -0.75 Combine like terms: -1.887458609 + -0.75 = -2.637458609 u = -2.637458609 Simplifying u = -2.637458609

Solution

The solution to the problem is based on the solutions from the subproblems. u = {1.137458609, -2.637458609}

See similar equations:

| 8b^2+8b=0 | | 6/5-1/4 | | 4m^2-3m-9=0 | | 11/5-1/4 | | 0.08X+160=3600 | | y=-2(-2.5)+10(-2.5)-7 | | 5x=(5x-3)+3 | | 12v^9x^9+16v^2x^3y^5=0 | | 0=-4.9*t^2+25*t | | 25+10x=30x | | 8d^2+9d-3=0 | | 92-(6x+15)=6(x+2)+x | | 20x-5=18x+1 | | 3x+2=7x-32 | | 5x-14-2x=7.4 | | -2.25+-.75y+3y=6 | | 7+2w=-3 | | Log(17-2x)=0 | | 3ab=7 | | 2w^2-8w+4=0 | | 6x+26=13x-9 | | 15uv^2x^3-20u^5v^9=0 | | 4e^2+6e-7=0 | | 2ab=5 | | -7R+5=4-6R+2 | | 2q^2-2q-6=0 | | -2*1+y=-4 | | 7y/11-1/55=1/55 | | xsquared-10(x-1)=11 | | 4g^2-7g-5=0 | | x^2+x+2.5=1.5 | | -2*1=-4 |

Equations solver categories