Question

Factorise : 49y²+84yz+36z²​

Answer 1

49y² + 84yz + 36z²

= (7y)2 + 2×7y× 6z + (6z)2

So from first identity, it can be written as

=(7y+6z)2

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Answer 2

$\huge\fbox{\dag Answer \dag}$

49y² + 84yz + 36z²

= (7y)² + 2×7y× 6z + (6z)²

So from first identity, it can be written as

=(7y+6z)²