Simplify the rational expression. State any restrictions on the variable.
(n^4-11n^2+30)/(n ^4 -7n^2+10)
My answer is
n^2-6/n^2-2 except +-sqrt5 and +-sqrt2
(n^4-11n^2+30)/(n ^4 -7n^2+10)
numberator roots:
n^2=11+-sqrt(121-120) /2
=11+-1 /2= 6,5
(n^2-6)(n^2-5)
roots of denominator (by insptection,5,2
(n^2-5)(N^2-2)
so you are left with (n^2-6)/(n^2-2)
you are correct
Thank you very much
Solving Rational Equations Quiz Part 1:
(Regular course)
1.c. n^2-6/n^2-2 ; n = +/- sqrt5, n= +/- sqrt2
2.B. 4a/7b^2 , a = 0, b = 0
3.C. (x-4)^2/(x+3)(x+1) ; x= -4,-3,-2,-1,4
4.B. (x+1)(x-1)(x^2+1)
5.A. 7a-49/(a-8)(a+8)
6.A. 21a-28/(A-6)(a+8)
7.C. 4x/3x^2+10x+3
8.C. 3x^2(y+4)/7y
9.D. -11/3
10.D. 14
11. D. 9 mi/h downstream, 6 mi/h upstream
We're using our resources to pass, no shame in that gang ♡
Random sophomore is right. thank you
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just a random sophomore appreciation post
Here's the answers for those taking advanced!
1) C. n^2-6/n^2-2 ; n ≠ +/- sqrt5, n= +/- sqrt2
2) C. (x-4)^2/(x+3)(x+1); x ≠ -4, -3, -2, -1, 4
3) A. 7a-49/(a-8)(a+8)
4) A. 21a-28/(a-6)(a+8)
5) C. 4x/3x^2+10x+3
6) D. -11/3
7) A. -4
8) D. 9 mi/h downstream; 6 mi/h upstream
Good luck guys!