Question

lm hộ mik phần 3 bài 1 zới

Answer 1

Bài 2: 

1: \(\Leftrightarrow3\sqrt{x+3}+5\sqrt{x+3}-\dfrac{3}{4}\cdot4\sqrt{x+3}=5\)

\(\Leftrightarrow5\sqrt{x+3}=5\)

=>x+3=1

hay x=-2

2: \(\Leftrightarrow7\sqrt{x-2}-14\cdot\dfrac{\sqrt{x-2}}{7}=3\sqrt{x-2}+8\)

\(\Leftrightarrow2\sqrt{x-2}=8\)

=>x-2=16

hay x=18