Question

Factorise using factor theorem: 25y^2-30y+9

Answer 1

25y^2-15y-15y+9=0
5y(5y-3)-3(5y-3)=0
(5y-3) (5y-3)=0
(5y-3)=0 or (5y-3)=0
5y=3. or 5y=3
y=3/5 or y=3/5
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Answer 2

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