Answer:
x^4 - 8 x^2 + 16
Step-by-step explanation:
Use formula (a-b)^2 = a^2-2ab+b^2
now a=4 b=x^2, plug in
nearest 1000: 920,000
nearest 100: 919,800
nearest 10 (you said 100 but I think you mean 10): 919,830
by memories the formula and practice questions
1485
sorry if im wrong
