C.Rational expression
expression-Permissible- Non- Permissible.
D. Give the domain of the following rational numbers.
(show your solution and justify your answer).
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C.Rational expression
expression-Permissible- Non- Permissible.
D. Give the domain of the following rational numbers.
(show your solution and justify your answer).
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ANSWER⤵️
C.
2. all real numbers except -4/3 , x=-4/3
3. all real numbers except 0 and -1 , x=0,-1
4. all real numbers except 5 and -4 , x=5,-4
5. all real numbers except -6 and 6 , x=-6,6
6. all real numbers except -9 and 5 , x=-9,5
D.
EQUATE THE FACTORS OF THE DENOMINATOR TO ZERO
1. -x=0
x=0
2. 3-x=0
3=x
3. -x =0 , x+2=0
x=0 , x=-2
4. x-7=0 , x-3=0
x=7 , x=3
5. x²-121=(x-11)(x+11)
x-11=0 , x+11=0
x=11 , x=-11
6. 2x²+7x+5=(2x+5)(x+1)
2x+5=0 , x+1=0
2x=-5 , x=-1
x=-5/2
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