Solve for w w^2+11w+18=0

Math
w2+11w+18=0
Factor w2+11w+18 using the AC method.
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Consider the form x2+bx+c. Find a pair of integers whose product is c and whose sum is b. In this case, whose product is 18 and whose sum is 11.
2,9
Write the factored form using these integers.
(w+2)(w+9)=0
(w+2)(w+9)=0
If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.
w+2=0
w+9=0
Set the first factor equal to 0 and solve.
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Set the first factor equal to 0.
w+2=0
Subtract 2 from both sides of the equation.
w=-2
w=-2
Set the next factor equal to 0 and solve.
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Set the next factor equal to 0.
w+9=0
Subtract 9 from both sides of the equation.
w=-9
w=-9
The final solution is all the values that make (w+2)(w+9)=0 true.
w=-2,-9
Solve for w w^2+11w+18=0

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