Factorisation
Answers
Answered by
2
Step-by-step explanation:
9y²-30y+25
(3y)²+2×3y×(-5)+(-5)²
(3y-5)²
Answered by
0
Answer:
9y²-30y+25
=9y²-15y-15y+25
=(9y²-15y)-(15y+25)
=3y(3y-5)-5(3y-5)
=(3y-5)(3y-5)
=(3y-5)²
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