Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • If p =- 2, find the value of: (iii) - 2p^3 - 3p^ 2 + 4p + 7

Q. 2.     If p=-2,  find the value of:

             (iii)  -2p^{3}-3p^{2}+4p+7

Answers (2)

best_answer

\\-2p3 - 3p2 + 4p + 7 \\= - 2 \times ( -2)^3 - 3 \times ( -2 )^2 + 4 \times ( -2 ) + 7 \\= 16 - 12 - 8 + 7 \\= 3

If p = -2 the value of -2p3 - 3p2 + 4p + 7 = 3

 

Posted by

Sayak

View full answer

-2 (-2)^3-3(-2)^2+4(-2)+7

-2(8)-3(4)+8+7

16-12+8+7

4+15

19

Posted by

Shubh Gupta

View full answer

Similar Questions

Latest Question