Answer:
Copper
Step-by-step explanation:
Count the exponents and this tells you the proton amount (atomic number)
and electron count
This is the electron configuration
V=-2ax+a Exponent 2 on the last a
The difference of two squares expression is (d) 25a^2-36b^6
<h3>How to determine the difference of two squares?</h3>
The difference of two squares is represented as:
x^2 - y^2
Where x and y are perfect square expressions.
From the list of options, we have:
25a^2-36b^6
The terms of the above expression are perfect squares
i.e.
25a^2 = (5a)^2
36b^6 = (6b^3)^2
Hence, the difference of two squares expression is (d) 25a^2-36b^6
Read more about expressions at:
brainly.com/question/3189867
#SPJ1
Answer:
-9, -8, -4 , 6 then 9..
Step-by-step explanation:
Your welcome
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