ROZWIAQZ RÓWNANIE.!x^2 - 9x + 20 = 0 (x^2 - TO JEST x DO KWADRATU )
Δ= 81 - 4 *1*20= 1
pierwiastek z Δ = 1
x1= (9+1) / 2 = 5
x2= (9-1) / 2= 4
x1=(9-1)/2=4 x2=(9+1)/2=5x={4,5}
proszę o naj! :)
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Δ= 81 - 4 *1*20= 1
pierwiastek z Δ = 1
x1= (9+1) / 2 = 5
x2= (9-1) / 2= 4
x1=(9-1)/2=4 x2=(9+1)/2=5
x={4,5}
proszę o naj! :)