krystal1999 krystal1999
  • 06-04-2018
  • Mathematics
contestada

if q(x)=7x^2-1 find q(-9)

Respuesta :

midknight9
midknight9 midknight9
  • 15-07-2018

For this, we are just going to plug in -9 for every x and then solve the equation:


[tex] q(x)=7x^{2} -1 [/tex]


[tex] q(-9)=7(-9)^{2} -1 [/tex]


[tex] q(-9)=7(81)-1 [/tex]


[tex] q(-9)=566 [/tex]


Now we know that q(-9) is equal to 566.

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