Question

resolva utilizando o metodo de soma e produto:
a)3x²-21x-24=0
b)x²-x-30=0​

Answer 1

a)3x²-21x-24=0 => :(3)

x² -7x -8 = 0

-b/c =7/-8 = 8-1/8•-1 => x'=8, x"=-1

b)x²-x-30=0

-b/c = 1/-30 = 6-5/6•-5 => x'=6 , x"=-5