Math, asked by anushka6827, 13 hours ago

find the value of polynomial 6x-4x3+7 at x=2 and x=-2​

Answers

Answered by aryaraghav80
1

Answer:

p(x) =  6x-4x^3+7

Substituting the value of x = 2

p(2) = 6(2) - 4(2)^3 + 7

       = 12 - 32 + 7 = - 13

Substituting the value of x = - 2

p(2) = 6(-2) - 4(-2)^3 + 7

       = - 12 + 32 + 7 = 27

Answered by Mysteryboy01
1

x =  2

 = 6x \:  -  \: 4 {x}^{3}  + 7

 = 6(2) - 4( {2)}^{3}  + 7

 = 12 - 4(8) + 7

 = 12 - 32 + 7

 =  19 - 32

 =  - 13

x =  - 2

 = 6x \:  -  \: 4 {x}^{3}  + 7

 = 6( - 2) \:  -  \: 4 { (- 2)}^{3}  + 7

  = -12 - 4( - 8) + 7

 = -12 + 32 + 7

 = -12+39

 = 27

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