wyrażenie x²-3x-4 zapisac w postaci wzoru skroconego mnożenia (iloczynu)
x²-3x-4=0
Δ=9- 4 x 1 x (-4)=25
√Δ=5
x1= -1
x2=4
(x+1)(x-4)
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x²-3x-4=0
Δ=9- 4 x 1 x (-4)=25
√Δ=5
x1= -1
x2=4
(x+1)(x-4)