4(u^2)=-u+3

Solution for 4(u^2)=-u+3 equation:

Simplifying
4(u2) = -1u + 3

Reorder the terms:
4u2 = 3 + -1u

Solving
4u2 = 3 + -1u

Solving for variable 'u'.

Reorder the terms:
-3 + u + 4u2 = 3 + -1u + -3 + u

Reorder the terms:
-3 + u + 4u2 = 3 + -3 + -1u + u

Combine like terms: 3 + -3 = 0
-3 + u + 4u2 = 0 + -1u + u
-3 + u + 4u2 = -1u + u

Combine like terms: -1u + u = 0
-3 + u + 4u2 = 0

Factor a trinomial.
(-1 + -1u)(3 + -4u) = 0

Subproblem 1
Set the factor '(-1 + -1u)' equal to zero and attempt to solve:

Simplifying
-1 + -1u = 0

Solving
-1 + -1u = 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 + -1u = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1u = 0 + 1
-1u = 0 + 1

Combine like terms: 0 + 1 = 1
-1u = 1

Divide each side by '-1'.
u = -1

Simplifying
u = -1
Subproblem 2
Set the factor '(3 + -4u)' equal to zero and attempt to solve:

Simplifying
3 + -4u = 0

Solving
3 + -4u = 0

Move all terms containing u to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -4u = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -4u = 0 + -3
-4u = 0 + -3

Combine like terms: 0 + -3 = -3
-4u = -3

Divide each side by '-4'.
u = 0.75

Simplifying
u = 0.75
Solution
u = {-1, 0.75}