Question

X2 + 3x - 4 = 0
alguém pode mim ajuda a resolver esse?​

Answer 1

x²+3x-4=0

x=-b+-√^/2a

x=-3+-√25/2.1

x=-3+-5/2

x'=-3+5/2

x'=2/2= 1

x"=-3-5/2

x"=-8/2= -4

^= b²-4.a.c

^=3²-4.1.-4

^=9+16

^=25