Question

1. Factorise the following using suitable identities.
a. 49x²-9²=​

Answer 1

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Answer 2

Answer:

(7x+3)(7x-3)

Step-by-step explanation:

49x²-(9)²

using a²-b²=(a+b)(a-b)

=49x²-(9)²

=(7x+3)(7x-3)