Answer:
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1. Option A</h2><h2 /><h2>
2. Option D</h2>
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..
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