Question

(3x-4) (3x+4) rezolvare ??

Answer 1

$(3x-4)(3x+4)=\ \textgreater \ (3 x)^{2} - 4^{2} =\ \textgreater \ 9 x^{2} -16$
$Succes.$

Answer 2

(3x-4)(3x+4) = 3²x²+3x*4-4*3x-4*4 = 9x²+12x-12x-16 = 9x²-16