Question

Qual e o resultado de (3x + 4) (3x -4)?

Answer 1

https://www.google.com.br/search?q=(3x+%2B+4)+(3x+-4)%3F&rlz=1C1PRFC_enBR644BR644&oq=(3x+%2B+4)+(3x+...

Answer 2

9x^2-12x+12x-8<=>
9x^2-8=0 <=>
9x^2=8 <=>
x^2=8-9 <=>
x^2= -1 <=>
x=$\sqrt{-1}$ <=>
 Inpossivel