Factorise: y^2+yz+9y+9z
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Answer:
(y + 9)(y + z)
Step-by-step explanation:
y² + yz + 9y + 9z
(y² + yz) + (9y + 9z)
y(y + z) + 9(y + z)
(y + 9)(y + z)
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