Question

Question about square roots and rationalizing/order of operations.

Answer 1

(4\[\sqrt{1-a}\])^2 - (4\[\sqrt{1-(a+h)}\])^2

Answer 2

Apply the perfect square identity, the expression becomes

\[(4\sqrt{1-a} - 4\sqrt{1-(a+h)})(4\sqrt{1-a} + 4\sqrt{1-(a+h)})\]
W|A yielded 16h.