$-45x^2 +5 \\ \\ GCF = 5 \\ \\ 5( \frac{45x^2}{5} - \frac{5}{5} ) \\ \\ -5(9x^2-1) \\ \\ -5((3x)^2-1^2) \\ \\ -5(3x+1)(3x-1) \\ \\ Answer: \fbox {-5(3x+1)(3x-1)}$

5 0

3 years ago

colby and jaquan are growing bacteria in an experiment in a labatory . colby starts with 50 bacteria and the number of bacteria

cricket20 [7]

Answer:400

Step-by-step explanation:

3 hours: 400 times 2=800

6 hours: 800 times 2=1600

9 hours: 1600 times 2=3200

12 hours: 3200 times 2=6400

15 hours: 6400 times 2= 12800

18 hours: 12800 times 2=25,600

21 hours: 25,600 times 2= 51200

24 hours: 102,400

7 0

3 years ago