The doctor's office where you work needs to store eight filing cabinets with patient information in one of three secure storage
1 answer:
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Answer:
a = 14
Step-by-step explanation:
The mean is the sum of the values divided by the number of values.
Answer:
Step-by-step explanation:
Factorise the numerator and denominator
8a² - 2 ← factor out 2 from each term
= 2(4a² - 1) ← 4a² - 1 is a difference of squares
= 2(2a - 1)(2a + 1)
4a² + 4a + 1 ← is a perfect square
= (2a + 1)²
Thus
= ← cancel (2a + 1) on numerator/ denominator
=
=