Multiply

(w + x )(w + x )

The given expression can be simplified using the distributive property:

(w + x)(w + x) = w(w + x) + x(w + x)

Expanding further:

= w * w + w * x + x * w + x * x

= w^2 + wx + wx + x^2

= w^2 + 2wx + x^2

So, (w + x)(w + x) simplifies to w^2 + 2wx + x^2.