Question

Simplify (7x + 3z) (7x – 3z) using suitable identity.

Answer 1

Answer:

(7x + 3z) (7x – 3z)can be written as:-

(7x-3z)² solve

49x²-9z²

Step-by-step explanation:

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Answer 2

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

{(a²-b²) =(a+b) (a-b)}

={(7x)²-(3z)²}

=49x²-9z²

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