80=(5w)(w)

Solution for 80=(5w)(w) equation:

Simplifying
80 = (5w)(w)

Remove parenthesis around (5w)
80 = 5w(w)

Multiply w * w
80 = 5w2

Solving
80 = 5w2

Solving for variable 'w'.

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

Add '-5w2' to each side of the equation.
80 + -5w2 = 5w2 + -5w2

Combine like terms: 5w2 + -5w2 = 0
80 + -5w2 = 0

Add '-80' to each side of the equation.
80 + -80 + -5w2 = 0 + -80

Combine like terms: 80 + -80 = 0
0 + -5w2 = 0 + -80
-5w2 = 0 + -80

Combine like terms: 0 + -80 = -80
-5w2 = -80

Divide each side by '-5'.
w2 = 16

Simplifying
w2 = 16

Take the square root of each side:
w = {-4, 4}