Question

resolva as equações completas?
(a) x²+10x-6=0

(b)x²+10x+9=0​

Answer 1

Resposta:

a)ײ+10-6=0

a)1

b)10

c)-6

b²-4.a.c

10²-4.1.(-6)

100+24

=-124

_________________

ײ+10×+9=0

a)1

B)10

c)9

^b²-4.a.c

^=10²-4.1.9

^=100-36

^=64

-b±raiz

2×a

-10±64

2×1

-10+8=18=9///-10-8=-18=-9

2 2 1 /// 2 2 1