SOLUTION: Which expressions are differences of squares? 8b^2-16c^6 16e^8-81g^4 49x^25-4y^16 121m^18-9n^10

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Question 1034571: Which expressions are differences of squares?
8b^2-16c^6
16e^8-81g^4
49x^25-4y^16
121m^18-9n^10
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Not the #1 item, but the items #2, #3, and #4.

8b%5E2=2%5E3%2Ab%5E2, the coefficient part is not a square.