Question

funçao do segundo grau fx = x2-3x-10

Answer 1

∆=9+40=49
x1=3+7/2=10/2=5
x2=3-7/2=-4/2=-2

Answer 2

delta= b²-4*a*c

delta= -3²-4*1*-10

delta = 9+40
delta =49

x=-b-+raiz de 49

x=3-+7sobre 2

x 1= 10/2 = 5

x2= -4/2= -2