Math, asked by jhanakhadap, 3 months ago

if (x ^2 – 5) number of books weigh (2x^4 −4x^3 + 20x −50) kg, what is the weight of one book?

Answers

Answered by ppkulkarni742
0

Answer:

Given weight of 6 books is 1.260 kg

⟹ weight of each book is

6

1.260

=0.210 kg

Let the number of books that will weigh 3.150 kg be x

as we know that

weight of x books is 0.210x kg

⟹0.210x=3.150

⟹x=

0.210

3.150

=15

Number of books is 15

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Answered by amitnrw
1

Given :  (x ² – 5) number of books weigh (2x⁴−4x³ + 20x −50) kg,

To Find :  what is the weight of one book

Solution:

weight of one book  = y  kg

Weight of (x ² – 5) number of books = (x ² – 5) y  kg

books weigh (2x⁴−4x³ + 20x −50)  kg,  

= >   (x ² – 5) y  = (2x⁴−4x³ + 20x −50)

=> y =  (2x⁴−4x³ + 20x −50)  /   (x ² – 5)

                     2x²  -4x  + 10

  (x ² – 5) _|    2x⁴−4x³ + 20x −50   |_

                       2x⁴    - 10x²

                     _________

                       −4x³   + 10x² + 20x −50

                       −4x³               + 20x

                     ______________________

                                  + 10x²         −50

                                  + 10x²           −50

                               _______________

                                                   0

Hence weight of one book  is   2x²  -4x  + 10  kg

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