2u^2-7u+3=2

Simple and best practice solution for 2u^2-7u+3=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 2u^2-7u+3=2 equation:


Simplifying
2u2 + -7u + 3 = 2

Reorder the terms:
3 + -7u + 2u2 = 2

Solving
3 + -7u + 2u2 = 2

Solving for variable 'u'.

Reorder the terms:
3 + -2 + -7u + 2u2 = 2 + -2

Combine like terms: 3 + -2 = 1
1 + -7u + 2u2 = 2 + -2

Combine like terms: 2 + -2 = 0
1 + -7u + 2u2 = 0

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

Divide each side by '2'.
0.5 + -3.5u + u2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -3.5u + -0.5 + u2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -3.5u + u2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -3.5u + u2 = 0 + -0.5
-3.5u + u2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-3.5u + u2 = -0.5

The u term is -3.5u.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5u + 3.0625 + u2 = -0.5 + 3.0625

Reorder the terms:
3.0625 + -3.5u + u2 = -0.5 + 3.0625

Combine like terms: -0.5 + 3.0625 = 2.5625
3.0625 + -3.5u + u2 = 2.5625

Factor a perfect square on the left side:
(u + -1.75)(u + -1.75) = 2.5625

Calculate the square root of the right side: 1.600781059

Break this problem into two subproblems by setting 
(u + -1.75) equal to 1.600781059 and -1.600781059.

Subproblem 1

u + -1.75 = 1.600781059 Simplifying u + -1.75 = 1.600781059 Reorder the terms: -1.75 + u = 1.600781059 Solving -1.75 + u = 1.600781059 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + u = 1.600781059 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + u = 1.600781059 + 1.75 u = 1.600781059 + 1.75 Combine like terms: 1.600781059 + 1.75 = 3.350781059 u = 3.350781059 Simplifying u = 3.350781059

Subproblem 2

u + -1.75 = -1.600781059 Simplifying u + -1.75 = -1.600781059 Reorder the terms: -1.75 + u = -1.600781059 Solving -1.75 + u = -1.600781059 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + u = -1.600781059 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + u = -1.600781059 + 1.75 u = -1.600781059 + 1.75 Combine like terms: -1.600781059 + 1.75 = 0.149218941 u = 0.149218941 Simplifying u = 0.149218941

Solution

The solution to the problem is based on the solutions from the subproblems. u = {3.350781059, 0.149218941}

See similar equations:

| 7x+5=3x+18 | | x=156+0.6x | | x(2x^2-32)=0 | | 100-8y=60 | | 3a-6=a-4 | | 6logx+2=0 | | z^6=27 | | 3=1+0.5v | | 2r+9=r+15 | | z^2+16+30i=0 | | 0.05(500)+40=0.07(500)+30 | | x^3=0.75 | | f(x)=x^3+13x^2+36x | | x^3+6x^2+11x-6=0 | | 0.05x+40=0.07x+30 | | 2u^2-7u-11=0 | | -80-12.2= | | 36=x-50 | | 7x=2x+-35 | | 10=a*1 | | 3(2m-1)+5=6(m+1) | | 3(2m-1)=6(m+1) | | 2y=8-2x | | y=-1E-05x+0.004 | | 3y-11=7 | | 2x+300=5x | | X(x-2)=-2x | | 5x+1=2x+17 | | 4(2x*1)=28 | | 3x^2+48x-1260=0 | | 125-3(2X-1)=98 | | 6x+9=4x+1 |

Equations solver categories