u^2-3u-1.5=0

Simple and best practice solution for u^2-3u-1.5=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 u^2-3u-1.5=0 equation:


Simplifying
u2 + -3u + -1.5 = 0

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

Solving
-1.5 + -3u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

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

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

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -3u + u2 = 0 + 1.5
-3u + u2 = 0 + 1.5

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

The u term is -3u.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3u + 2.25 + u2 = 1.5 + 2.25

Reorder the terms:
2.25 + -3u + u2 = 1.5 + 2.25

Combine like terms: 1.5 + 2.25 = 3.75
2.25 + -3u + u2 = 3.75

Factor a perfect square on the left side:
(u + -1.5)(u + -1.5) = 3.75

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(u + -1.5) equal to 1.936491673 and -1.936491673.

Subproblem 1

u + -1.5 = 1.936491673 Simplifying u + -1.5 = 1.936491673 Reorder the terms: -1.5 + u = 1.936491673 Solving -1.5 + u = 1.936491673 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + u = 1.936491673 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + u = 1.936491673 + 1.5 u = 1.936491673 + 1.5 Combine like terms: 1.936491673 + 1.5 = 3.436491673 u = 3.436491673 Simplifying u = 3.436491673

Subproblem 2

u + -1.5 = -1.936491673 Simplifying u + -1.5 = -1.936491673 Reorder the terms: -1.5 + u = -1.936491673 Solving -1.5 + u = -1.936491673 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + u = -1.936491673 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + u = -1.936491673 + 1.5 u = -1.936491673 + 1.5 Combine like terms: -1.936491673 + 1.5 = -0.436491673 u = -0.436491673 Simplifying u = -0.436491673

Solution

The solution to the problem is based on the solutions from the subproblems. u = {3.436491673, -0.436491673}

See similar equations:

| 3/4(2k-7)=-1/8(5-2k) | | 8a=17+24 | | 4-y=6 | | 4r+19= | | x-0=6 | | 8m^2-6m-5=0 | | 10x+28=3x+140 | | 41=5c-4 | | 2(-6y+15)-2=-10y | | 5a=11a+4 | | (4x-6)(4x+8)= | | -8v+5(8v-19)=13v+1-5v | | 92-9r=7 | | -14t+3(4t+2)=4t-7t+19 | | x+4(2)=20 | | 7c+20=2 | | -4=(8)+b | | x+(0)y=20 | | 2y=12 | | 1=(6)+b | | 0+4y=20 | | 9(-14b+8)=2-4(20b+17) | | 2(x-5).5(x-4)=5 | | 2a(3b+c)= | | 8(-6w-20)=-18w+9-17w | | x+6y=27 | | 11x-21=67 | | y=5+b | | 20r-20-7r=5(2r+20)+11r | | 25t^2-9=0 | | 160-6x=4x+20 | | 2=(o)+b |

Equations solver categories