What is the value of 234-2n2 when n=5?

Multiplying an even number of negative numbers gives an answer that is choose from:

What does x = in this equation x+3+2x=x+5

Answer asap. you begin with 1/2 scoop of ice cream. since you're hungry, you ask the vendor for 2/7 more scoops of ice cream. then, you eat 5/8 scoops. how many scoops of ice cream are left on your cone? i will mark brainliest for first correct answer.