Great
I really like this question, cause, you know, there isn't one. But good for Erik and Nita.
Answer: 5 1/4
Step-by-step explanation:
8/3 + 2 7/12
8/3 + 31/12
= 21/4
= 5 1/4
For this case we have to factorize the following trinomials as the product of two binomials.
We have then:
a2 + a - 20
(a + 5) (a-4)
a2 - 9a + 20
(a-5) (a-4)
a2 - 8a - 20
(a-10) (a + 2)
a2 - 12a + 20
(a-10) (a-2)
a2 - 19a - 20
(a-20) (a + 1)
Answer:

Step-by-step explanation:
To solve, we need to take square root of both sides first:

Now we use the property of radical shown below to simplify square root of 28:
Property: 
Now, we have:

Now we take 4 to the other side and isolate x:

first answer choice is right.
Add your decimals to get the answer.