4u^2+5=-21u

Simple and best practice solution for 4u^2+5=-21u 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+5=-21u equation:


Simplifying
4u2 + 5 = -21u

Reorder the terms:
5 + 4u2 = -21u

Solving
5 + 4u2 = -21u

Solving for variable 'u'.

Reorder the terms:
5 + 21u + 4u2 = -21u + 21u

Combine like terms: -21u + 21u = 0
5 + 21u + 4u2 = 0

Factor a trinomial.
(5 + u)(1 + 4u) = 0

Subproblem 1

Set the factor '(5 + u)' equal to zero and attempt to solve: Simplifying 5 + u = 0 Solving 5 + u = 0 Move all terms containing u to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + u = 0 + -5 Combine like terms: 5 + -5 = 0 0 + u = 0 + -5 u = 0 + -5 Combine like terms: 0 + -5 = -5 u = -5 Simplifying u = -5

Subproblem 2

Set the factor '(1 + 4u)' equal to zero and attempt to solve: Simplifying 1 + 4u = 0 Solving 1 + 4u = 0 Move all terms containing u to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 4u = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 4u = 0 + -1 4u = 0 + -1 Combine like terms: 0 + -1 = -1 4u = -1 Divide each side by '4'. u = -0.25 Simplifying u = -0.25

Solution

u = {-5, -0.25}

See similar equations:

| 4g^2+8g-3=0 | | 3/4=-5/7m | | x^2-51x-756=0 | | z^3+5z^2-18z=0 | | -7x^2-5x+15=0 | | 7x+4y-2x=3x+10 | | 9d^2-4d+3=0 | | 5x^2=40r | | 4x^2-4x=9 | | (x^2-12x+35)/(x-7) | | v^2-5v-50=0 | | -5+9m=9m+8 | | -4x-6=-34 | | 3(x-1)2+1=19 | | x^2-169x+3600=0 | | log(x+1)+log(5x)=2 | | 4*cos(2t)-4*sin(4t)=0 | | -5(x+3)2=-80 | | -9-7=x-17 | | 0.5(x+2)2-4=14 | | -2x+3=-19 | | 7x-9x=36 | | x+6=-3-14 | | -45=2x+3x | | x(t-1)=ty | | (x+2)(2x-7)=-15 | | 9x-7x=30 | | 3n-2=78 | | -1/2(16-2(19)) | | 7k^2-73k+90=0 | | 5n-2=78 | | x^2-2500x+1440000=0 |

Equations solver categories