Question

Rút gọn các biểu thức sau với

a)

b)

Answer 1

a) 4 \(\sqrt{x}\)-5\(\sqrt{4x}\)-\(\sqrt{25x}\)- 3\(\sqrt{x}\)-5

=4\(\sqrt{x}\)- 10\(\sqrt{x}\)-5\(\sqrt{x}\)-3\(\sqrt{x}\)-5

= (4-10-5-3-5)\(\sqrt{x}\)

=-19\(\sqrt{x}\)

Answer 2

=\(4\sqrt{^{ }x}-5\sqrt[]{4x}-\sqrt{25x}-3\sqrt{x}-5\)

=\(\sqrt{x}\left(4-10-5-3\right)-5\)

=\(-14\sqrt{x}-5\)