Factorise the following expressions.
49y2 + 84yz + 36z2
Answers
Answered by
5
Answer:
It is [ 7y + 6z ] ^2.
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Answered by
67
Aɴsᴡᴇʀ :-
49y2 + 84yz + 36z2
Here, 42 + 42 = 84 and 42 × 42 = 49 × 36 = 1764
49y2 + 84yz + 36z2
= 49y2 + 42yz + 42yz + 36z2
= 7y(7y + 6z) +6z(7y + 6z)
= (7y + 6z) (7y + 6z)
= (7y + 6z)2
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