Answer:
144x^2−y^2−169 because ther are no like terms
Step-by-step explanation:
If u mean 4^4 or four to the fourth power then it’s 256
helped.
This answer was fact checked as TRUE by independent fact checkers
7= 16 lb >16 Oz 16x16=256
8= 1500 lb < 2T 2000+2000
9= 3T>5999 lb 2000x3
10= 1600 Oz > 10 lb 1600÷16=100
11= 19 lb>300 Oz 19x16=304oz
12= 8 oz= 1/2 lb 16 ounces = 1 pound 1/2=8
13= pounds=6000 tons= 1, 1.5
