Which expressions are differences of squares?
choose all answers that are correct.
question 2 options:

8b^2 – 16c^6

16e^8 – 81g^4

49x^25 – 4y^16

121m^18 – 9n^10

Difference of 2 perfec squares is
(a^2)-(b^2)

if the exponents are both even and the coeficient (the number in front) are perfect squares, then it is difference t 2 perfect squares

first one
8 is not perfect square

2nd one
(4e^4)^2-(9g^2)^2

third
25 is odd, so it cannot be split up into 2 nice numbers

4th
(11m^9)^2-(3n^5)^2

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