Answer:8 and 4
Step-by-step explanation:
8+4=12
8-4=4
(hope this helps)
Answer:
Step-by-step explanation:
The 6x^2 because 6 is not a perfect square.
Answer:
51
Step-by-step explanation:
11+(-7)^2-9 - original
11+49-9 - square the -7, since its in brackets the negative applies too and a negative x a negative = positive, so it ends up as 7x7+49
60-9 - add both positives 11+49=60
51 - subtract 9 from 60, 60-9=51
