Which expression is equal to (x+2)(x-4)/(x-4)(x+4) A) x-2/x+4

B) x+4/x+2

C) x-2/x-4

D) x+2/x+4

The expression equal to is

Option D is correct.

Step-by-step explanation:

We need to solve the expression

Since it is a fraction, and all terms are multiplying with each other we can cancel out common terms.

Since x-4 is both in numerator and denominator so, it will be cancelled out and we will get:

So, the expression equal to is

Option D is correct.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.