Step-by-step explanation:
Things I notice about this problem:
- "Difference" indicates subtraction.
- When a problem simply says "a number," I replace it with a variable.
It is written out like this:
.
Answer:
Ano bayan puro Math nalang nakikita ko
Is b I already did that question like a lot of times is so easy trust me is b
Answer:


Step-by-step explanation:
Given

Express the denominator as 
To do this, we divide
by the denominator

So, the required fraction is:


Hence:

Given

Express the denominator as 
Multiply the fraction a+4/a+4
So, we have:

Apply difference of two squares to the denominator

Take the additive inverse of the numerator and denominator


Hence:
