$1-$ Let $G$ be the grammar below:

$EEoE|-E|(E)|id$

$o-|+|**\frac{|}{?}$

Is the string $"A+B**(C-\frac{D}{K})"$ accept or not?

$2-$ Let $G$ be the grammar below:

$EE+E|E-E|E**E|\frac{E}{E}|EuarrE|(E)|-E|id$

Is the string $"$id $"$ accept or not?