SOLUTION: 16(-1/2)squared minus 125(-2/5)squared. Sorry I had to write squared I couldn't find a button on my laptop. I keep coming up with -6 but the text book say -16 and I can't figure ou

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: 16(-1/2)squared minus 125(-2/5)squared. Sorry I had to write squared I couldn't find a button on my laptop. I keep coming up with -6 but the text book say -16 and I can't figure ou      Log On


   

Question 121927This question is from textbook Beginning Algera
: 16(-1/2)squared minus 125(-2/5)squared. Sorry I had to write squared I couldn't find a button on my laptop. I keep coming up with -6 but the text book say -16 and I can't figure out why. This question is from textbook Beginning Algera

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Evaluate:
16%28-1%2F2%29%5E2-125%28-2%2F5%29%5E2+=+16%281%2F4%29-125%284%2F25%29 = 4-5%284%29+=+4-+20 = -16