Factorise
-y² + 6y - 9
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Answered by
1
Answer:
y = 3
Step-by-step explanation:
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Answered by
1
Answer:
-(y - 3)²
Step-by-step explanation:
-y² + 6y - 9
take - common
- [y² + 9 -6y] (→ (a - b)² = a² + b² -2ab )
= -(y - 3)²
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