Answer:
i cannot say that i am perfect or good in math but if there is any problem then i will try to solve.
Step-by-step explanation:
2 decimal places for regular . 3.14
Answer:
20
Step-by-step explanation:
This is the diffiarence of two perfect squares. this should be memorised, but if not here it is
a^2-b^2=(a-b)(a+b)
so 16^2-81=16^2-9^2
so the answer is (16-9)(16+9)
(ab)^4 means ab times itselv 4 times
multicplication is comutaive so
a^4b^4
2nd option is answer
