Question

Cum se scrie 3xla a 2a + 15x+ 18 !! Se descompune cumva ??? Urgent va rog

Answer 1

[tex]3x^2+15x+18=0 \\ \Delta=225-4*3*18=225-216=9 \\ x_1= \frac{-15-3}{6}= \frac{-18}{6}=-3 \\ x_2= \frac{-15+3}{6}= \frac{-12}{6}=-2 \\ a x^{2} +bx+c=a(x-x_1)(x-x_2) \\ 3x^2+15x+18=3(x+3)(x+2) -descompunerea[/tex]