Answer:
5.7 is the answer I had the same question in my test
The answer would be 4/85
1. 2/5 ÷ 8 * 2 + 1 over 2
2. 2/5 ÷ 16 + 1 over 2
3. 2/5 ÷ 17/2
4. 2/5 * 2/17
5. 2 * 2 over 5 * 17
6. 4 over 5 * 17
7. finally 4/85
<h3>500 PENCILS ARE GOT TO 1 SCHOOL. because 10 is divided by 5000 </h3>
This is the diference of 2 perfect squares. 4 is a perfect square, x^2 is a perfect square, and 25 is a perfect square. The pattern for this is (ax + b)(ax - b). Our a is 2 since 2*2 = 4, and our b is 5 since 5*5 = 25. So your factors are (2a+5)(2a-5), choice C.
