Question

9x ao quadrado+6x-48=0

Answer 1

9x²+6x-48=0

b²-4.a.c
6²-4.9.-48
36+1728
1764

-b+✓1764/2.a -b-✓1764/2.a
-6+42/2.9 -6-42/2.9
36/18. -48/18
2. -2,6666666

x¹=2
x²= -2,6 ou -48/18