Answer:
(x+3)(2x+3)
Step-by-step explanation:
Factor:
2x^2+9x+9
=(2x+3)(x+3)
Answer:
Approximately 9.211 times
Step-by-step explanation:
Given
--- half life of helium-5
--- half life of helium-9
Required
How many times greater is y than x
To do this, we simply divide y by x


Apply law of indices




