factorise (1+2y)^2 + (9y^2 -1) Plz do fast i need it urgent
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Answer:
8y+9y^2
Step-by-step explanation:
(1+2y)^2 + (9y^2 -1)
=1+4y+4y+9y^2-1
= 8y+9y^2
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