Question

combine.
this is my friend.he helped me a lot​

Answer 1

Answer:

Explanation:

This is my friend who helped me a lot.

Here who is the conjunction.

Answer 2

Answer:

$\geq \neq x^{2} \\ \leq \left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx \lim_{n \to \infty} a_n \pi \sqrt[n]{x} \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]$

Explanation: