F(x)=22xplus 33 and g(x)=x2−44x−55, find (g◦f)(88)

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

This is about circle theorems. someone asap : (

Consider u = {x|x is a negative real number}which is an empty set? o {x|x eu and x has a negative cube root}o {x|x eu and x has a negative square root}{x|x eu and x is equal to the product of a positive number and -1}{x|x eu and x is equal to the sum of one negative and one positive number?