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Pleaseee i really need help!!

0 votes
Its all about Rational Equation. Then express the answer in simplest form .
 
 
a) 
 
  16n              63
 
______ x _______
 
   45            12n^2
 
 
 
b) 21c^2[c-5]      18c + 9
 
    _______  x   _______
 
   7c[2c+1]            3c
 
 
 
  
 
thanks alot
asked Nov 4, 2014 in CALCULUS by anonymous

2 Answers

0 votes

(a)

image

Now write 16 in factor form 16 = 4*4 .

Write 63 in factor form 63 = 9*7 .

Write 45 in factor form 45 = 9*5 .

Write 12 in factor form 12 = 4*3 .

image

Now cancel  common terms .

image

image

So the answer is 28/15n .

answered Nov 4, 2014 by friend Mentor
reshown Nov 4, 2014 by bradely
0 votes

(b)

image

Now write 21 in factor form 21 = 7*3 .

Take out common factor 9 in 18c + 9 = 9(2c+1) .

image

Write 9 in factor form 9 = 3*3 

image

Now cancel  common terms .

image

 = 9(c -5)

So the answer is 9(c -5) .

answered Nov 4, 2014 by friend Mentor

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