Question

Find the following products ​

Answer 1

Answer:

25x^2-81

x^4y^2-9x^2

Answer 2

Answer:

1.(5x+9)(5x-9)

It is in the form of (a+b) (a-b) =a^2-b^2

(5x)^2-(9)^2

=25x^2-81

2.(x^2y+3z)(x^2y-3z)

(x^2y)^2-(3z)^2

x^4y^2-9z^2

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