Question

plzzx Give me the correct answer plzz Give me the steps also plzz help me​

Answer 1

Answer:

(a+b) *(a-b) =a^2-b^2

=(3x) ^2-1

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Answer 2

Answer:

(3x^2)^2-1

identity used (a+b)(a-b)

a^2-b^2

here,

a=3x^2

b=1

So, ATQ,

=(3^2)^2-(1)^2

=9^4-1

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