Odpowiedź:
a ) a = 1 b = 2 c = - 3
Δ = b² - 4 a*c = 2² - 4*1*(-3) = 4 + 12 = 16
b)
a = 4 b = - 8 c = 0
Δ = ( - 8)² - 4*4*0 = 64 - 0 = 64
c )
a = - 4 b = 0 c = 20
Δ = 0² - 4*(- 4)*20 = 0 + 16*20 = 320
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Odpowiedź:
a ) a = 1 b = 2 c = - 3
Δ = b² - 4 a*c = 2² - 4*1*(-3) = 4 + 12 = 16
b)
a = 4 b = - 8 c = 0
Δ = ( - 8)² - 4*4*0 = 64 - 0 = 64
c )
a = - 4 b = 0 c = 20
Δ = 0² - 4*(- 4)*20 = 0 + 16*20 = 320
Szczegółowe wyjaśnienie: