What do the AED and IED have in common

Both have ED at the end lol.

AED is an automatic electronic defibrillator,

while an IED is Improvised explosive device

One saves you, and one kills you.

Step by step explanation

1.

Use to rewrite the fractions

Write all numerators above the Least Common Denominator ( X - 1 ) ( X + 1 )

When there is a ( - ) in front of an expression in parentheses , change the sign of each term in the expression

Using , simplify the product

Since two opposites add up to zero, remove them from the expression

So, Option A is the right option.

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2.

Write - X as a difference

Using , factor the expression

Factor the expression

Factor out X+3 from the expression

Reduce the fraction with x-4

Write all the numerators above the common denominator

When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression

Collect like terms

Subtract the numbers

Undefined at,

X + 4 = 0

Move constant to R.H.S and change its sign

Calculate

So, the answer is :

, undefined at X = -4 and 4

Hope this helps..

Best regards!!