Question

phân tích thành nhân tử

\(\sqrt{a^2-b^2}+\sqrt{a-b}\)

Answer 1

\(=\sqrt{a-b}\left(\sqrt{a+b}+1\right)\)

Answer 2

\(=\sqrt{\left(a+b\right)\left(a-b\right)}+\sqrt{a-b }\)
\(=\sqrt{a-b}\cdot\sqrt{a+b}+\sqrt{a-b}\)
\(=\sqrt{a-b}\cdot\left(\sqrt{a+b}+1\right)\)