Solve the following expression:
$y^{2}+9 y+18 $

Given: The given expression is $y^{2}+9 y+18 $.

To do: Find the value of $y$.

Solution:

$y^2 + 9y + 18$

$= y^2 + 6y + 3y + 18$[splitting the middle term]

= $y(y+6) + 3 (y + 6)$

= $(y + 3) (y + 6)$

$ y = -3 \ or -6$

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Updated on: 10-Oct-2022

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