2y^2+4y+4=100

Solution for 2y^2+4y+4=100 equation:

Simplifying
2y2 + 4y + 4 = 100

Reorder the terms:
4 + 4y + 2y2 = 100

Solving
4 + 4y + 2y2 = 100

Solving for variable 'y'.

Reorder the terms:
4 + -100 + 4y + 2y2 = 100 + -100

Combine like terms: 4 + -100 = -96
-96 + 4y + 2y2 = 100 + -100

Combine like terms: 100 + -100 = 0
-96 + 4y + 2y2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-48 + 2y + y2) = 0

Factor a trinomial.
2((-8 + -1y)(6 + -1y)) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(-8 + -1y)' equal to zero and attempt to solve:

Simplifying
-8 + -1y = 0

Solving
-8 + -1y = 0

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

Add '8' to each side of the equation.
-8 + 8 + -1y = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -1y = 0 + 8
-1y = 0 + 8

Combine like terms: 0 + 8 = 8
-1y = 8

Divide each side by '-1'.
y = -8

Simplifying
y = -8
Subproblem 2
Set the factor '(6 + -1y)' equal to zero and attempt to solve:

Simplifying
6 + -1y = 0

Solving
6 + -1y = 0

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

Add '-6' to each side of the equation.
6 + -6 + -1y = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -1y = 0 + -6
-1y = 0 + -6

Combine like terms: 0 + -6 = -6
-1y = -6

Divide each side by '-1'.
y = 6

Simplifying
y = 6
Solution
y = {-8, 6}