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iiamdance
Group Title
simplify the rational expression. State any restrictions on the variable.
p^2  4p  32/p + 4
–p + 8; p ≠ –4
p – 8; p ≠ –4
–p – 8; p ≠ –4
p + 8; p ≠ –4
 one year ago
 one year ago
iiamdance Group Title
simplify the rational expression. State any restrictions on the variable. p^2  4p  32/p + 4 –p + 8; p ≠ –4 p – 8; p ≠ –4 –p – 8; p ≠ –4 p + 8; p ≠ –4
 one year ago
 one year ago

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SamuelAlden917 Group TitleBest ResponseYou've already chosen the best response.1
1. fully factor everything. 2. cancel as muich as you can out 3. make sure it's fully simplified 4. look at ALL denominators you have come across, set equal to 0, and thus find restrictions. (p^2 4p 32) / (p+4) (p8)(p+4) / (p+4) (p+4)s cancel each other out, leaving you with (p8) / 1 p 8 Denominators: (p+4) p+4 =0 p= 4 THEREFORE p is every real number except for 4. (n^4 11n^2 +30) / (n^4 7n^2 +10) (n^2 6)(n^25) / (n^25)(n^2 2) NOTE that (n^25)s cancel each other out, leaving you with (n^2 6) / (n^2 2) can't simplify further. DENOMINATORS: (n^25)(n^22) =0 n^25 =0 and n^2 2 = 0 n^2 = 5 and n^2 = 2 n= +/ √5 and n= +/ √2 THEREFORE n is all real numbers except for +/ √2, +/ √5 (x4)(x+4) / (x+3)(x+2) / (x+4)(x+1) / (x4)(x+2) WHICH IS THE SAME AS: (x4)(x+4) / (x+3)(x+2) TIMES (x4)(x+2) / (x+4)(x+1) (x+4)s cross cancel, (x+2)s cross cancel: (x4) / (x+3) TIMES (x4) / (x+1) (x4)(x4) / (x+3)(x+1) can't simplify further, denominators: (x+3)(x+2)(x+4)(x+1) =0 x+3=0 and x+2=0 and x+4=0 and x+1=0 x= 3 and x= 2 and x= 4 and x= 1 THEREFORE x is all real numbers except for 4, 3, 2, 1
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{ (p  8)\cancel {(p + 4)} }{ \cancel {p + 4} }\]So, the only value you cannot have is: p = 4 Answer is "b"
 one year ago

SamuelAlden917 Group TitleBest ResponseYou've already chosen the best response.1
That help?
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
The slashes are for the cancellation. You are left with "p  8"
 one year ago
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