Factorise using the identity:9y²-30y+25
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Answer:
9y² +30y +25
= 9y² +15y +15y +25
= 3y(3y + 5) +5(3y +5)
= (3y+5)(3y+5)
= (3y+5)²
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9y² +30y +25= 9y² +15y +15y +25= 3y(3y + 5) +5(3y +5)= (3y+5)(3y+5)= 6
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