ClayverSantos17 15/05/2013 x² - B x + 4 =0 Δ = B² - 4ac Δ = 65 B² - 4 a c = 65 B² = 65 + 4 . 1 . 4 B² = 65 + 16 B² = 81 B = 81 B = ±9
ClayverSantos17
x² - B x + 4 =0
Δ = B² - 4ac
Δ = 65
B² - 4 a c = 65
B² = 65 + 4 . 1 . 4
B² = 65 + 16
B² = 81
B = 81
B = ±9