Question

resolva as equações do 2⁰ grau sendo u = R x² + 2z - 8 = 0​

Answer 1

Resposta:

x² +2z -8= 0

∆= b² - 4.a.c

∆= 2²-4.1.( -8)

∆= 4 - -32

∆= 4+32

∆= 36

x = -b+ ou-✓∆/2.a

x= -2+-✓36/2.1

x=-2+-6/2

x'' = -2+3

x''= +1

x"= -2-3

x"= -5