Question

y Square - 6y - 27

$y { }^{2} - 6y - 27$
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Answer 1

Answer:

y

2

+6y−27=0

⇒y

2

+9y−3y−27=0

⇒y(y+9)−3(y+3)=0

⇒(y+9)(y−3)=0

∴y=−9,3