Mathematics: Simplifying rational expressions 1. (c+8)(c-8)/(c-8)(c+3) 2. n^2+4n-12/n^2+2n-8 3. 42x^2y^3/28x^3y 4. m^2-3m-10/m-5

Simplifying rational expressions 1. (c+8)(c-8)/(c-8)(c+3)

Ответ:

jbehrens6538

16.01.2022

1. $\frac{(c + 8)(c - 8)}{(c - 8)(c + 3)}_,_$
   $\frac{c + 8}{c + 3}_,_$

2. $\frac{n^{2} + 4n - 12}{n^{2} + 2n - 8}_,_$
   $\frac{n^{2} + 6n - 2n - 12}{n^{2} + 4n - 2n - 8}_,_$
   $\frac{n(n) + n(6) - 2(n) - 2(6)}{n(n) + n(4) - 2(n) - 2(4)}_,_$
   $\frac{n(n + 6) - 2(n + 6)}{n(n + 4) - 2(n + 4)}_,_$
   $\frac{(n - 2)(n + 6)}{(n - 2)(n + 4)}_,_$
   $\frac{n + 6}{n + 4}_,_$

3. $\frac{42x^{2}y^{3}}{28x^{3}y}_,_$
   $\frac{3y^{2}}{2x}_,_$

4. $\frac{m^{2} - 3m - 10}{m - 5}_,_$
   $\frac{m^{2} - 5m + 2m - 10}{m - 5}_,_$
   $\frac{m(m) - m(5) + 2(m) - 2(5)}{m - 5}_,_$
   $\frac{m(m - 5) + 2(m - 5)}{m - 5}_,_$
   $\frac{(m + 2)(m - 5)}{m - 5}_,_$
   m + 2_,_

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Ответ:

silveryflight

08.02.2021

Mathematics

When I solve it , I got the answer not the same with you.

( i ) The lateral area of the prism is 204.

( ii ) The total surface area of the prism is 744.

Step-by-step explanation:

( i ) We got that answer because we multiply 17 cm with 12 cm.

( 17 x 12 )

Because it ask only ask for the lateral area which is length and width.

Lateral means side or side so it is length and width not height and

width/length.

( ii ) We got that answer because first step we multiply 17 cm with 12 cm.

We also have to multiply the gotten answer with 2.

Second step, we multiply 12 cm with 7 cm. Almost gonna forgot,

we also have to multiply the gotten answer with 4. Then, add the first

step and second step to make the total surface area.

= ( 17 x 12 x 2 ) + ( 12 x 7 x 4 )

= ( 204 x 2 ) + ( 84 x 4 )

= 408 + 336

= 744

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Simplifying rational expressions
1. (c+8)(c-8)/(c-8)(c+3)
2. n^2+4n-12/n^2+2n-8
3. 42x^2y^3/28x^3y
4. m^2-3m-10/m-5

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