4u^2+5u-3=0

Simple and best practice solution for 4u^2+5u-3=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 4u^2+5u-3=0 equation:


Simplifying
4u2 + 5u + -3 = 0

Reorder the terms:
-3 + 5u + 4u2 = 0

Solving
-3 + 5u + 4u2 = 0

Solving for variable 'u'.

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

Divide each side by '4'.
-0.75 + 1.25u + u2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + 1.25u + 0.75 + u2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + 1.25u + u2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + 1.25u + u2 = 0 + 0.75
1.25u + u2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
1.25u + u2 = 0.75

The u term is 1.25u.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25u + 0.390625 + u2 = 0.75 + 0.390625

Reorder the terms:
0.390625 + 1.25u + u2 = 0.75 + 0.390625

Combine like terms: 0.75 + 0.390625 = 1.140625
0.390625 + 1.25u + u2 = 1.140625

Factor a perfect square on the left side:
(u + 0.625)(u + 0.625) = 1.140625

Calculate the square root of the right side: 1.068000468

Break this problem into two subproblems by setting 
(u + 0.625) equal to 1.068000468 and -1.068000468.

Subproblem 1

u + 0.625 = 1.068000468 Simplifying u + 0.625 = 1.068000468 Reorder the terms: 0.625 + u = 1.068000468 Solving 0.625 + u = 1.068000468 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + u = 1.068000468 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + u = 1.068000468 + -0.625 u = 1.068000468 + -0.625 Combine like terms: 1.068000468 + -0.625 = 0.443000468 u = 0.443000468 Simplifying u = 0.443000468

Subproblem 2

u + 0.625 = -1.068000468 Simplifying u + 0.625 = -1.068000468 Reorder the terms: 0.625 + u = -1.068000468 Solving 0.625 + u = -1.068000468 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + u = -1.068000468 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + u = -1.068000468 + -0.625 u = -1.068000468 + -0.625 Combine like terms: -1.068000468 + -0.625 = -1.693000468 u = -1.693000468 Simplifying u = -1.693000468

Solution

The solution to the problem is based on the solutions from the subproblems. u = {0.443000468, -1.693000468}

See similar equations:

| 7x-9=7x+9 | | 0.3x^2-15x+94=0 | | 6g+4=4+6g | | 6(x-2)+7=67 | | 5x^2+15x-3=0 | | 9g+7=9g | | 3g+4-2=g-1 | | 82+12x+8x^2=0 | | 6x-10=2(x-3) | | 0x+3y=1 | | 6t+3(5t-4)=12(2t-3) | | 7x^2-27-40=0 | | 100+99-x=99 | | 3x-4+9x=28 | | T*6-7=9 | | 9=15b-23 | | a*6+8=11 | | 11x-5=9x+9 | | 8x+12=5+6 | | 5[x-1]-2=23 | | 3r+23= | | 3a-10=2b+20 | | 3[4x+1]+10=7 | | 3a-10=2b+10 | | 1+2(4)+3x=30 | | 250d=5000 | | 9a+3a+a=5-18 | | x^7-5x^5-4x^3+20x=0 | | 0.7x-1.2=0.3x | | 4(k-5)-3(k+1)-14=-31 | | 4z+6+45z+5=14-6(8-8z)+z | | 250d=11000 |

Equations solver categories