Question

factorization of 81y²-36y+4 using identities
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Answer 1

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Answer 2

Answer:

$81y^2 - 36y + 4$ $=(9y - 2)^2$

Step-by-step explanation:

$81y^2 - 36y + 4$

$=(9y)^2 - 2.9y.2 + 2^2$

$=(9y - 2)^2$  [using the identity $(a - b)^2 = a^2 - 2a.b + b^2$]