The answer is, x-5 equals to 0. So x equals to 5. So your answer is 5.
I always prefer factoring, if there are simple factors.
There are simple factors here.
x² + 11x + 18 = 0
(x + 2) (x + 9) = 0
The left side is zero if either factor is zero.
First factor:
x + 2 = 0
<u>x = -2</u>
Second factor:
x + 9 = 0
<u>x = -9 </u>
I'm pretty sure that they are there to show symmetry
Answer:
0.35355339059
Step-by-step explanation:
