I have already tried -24 not the answer apparently. Let me know if the quiz is incorrect and it is -24 or not. Otherwise, PLEASE HELP!!!

Answer:
Math is far from my strongsuite, but try 18x?
Step-by-step explanation:
I'm assuming "For x=-4" means that x is equal to -4. X is squared by 2 meaning that it would essentially be "-4×-4", which is equal to positive 16. 16+2x should be equal to 18x. I hope I'm correct about that XD