Question

(W+10)(w-10) simplify

Answer 1

w2−100

Explanation:

(w+10)(w−10)

=(w+10)(w+−10)

=(w)(w)+(w)(−10)+(10)(w)+(10)(−10)

=w2−10w+10w−100

=w2−100

Answer 2

w^2-20w -100

Explanation:

(w+10)(w-10)

Foil

first : w*w = w^2

outer: w*-10 = -10w

Inner: 10*w = 10w

last: -10 *10 = -100

Add them together

w^2 -10w-10w -100

Combine like terms

w^2-20w -100