February 2019 0 47 Report
Wyznacz zbiór wartości f: f(x) = (x−2)(x − 4) + 6x
Gdzie robię błąd?

f(x) = (x2 − 4x − 2x + 8) + 6x
f(x) = (x2 = 6x + 8) + 6x
f(x) = x2 + 8

Δ = b2 − 4ac = 02 − 4 * 1 * 8 = 0 − 32 = −32
q= −Δ/4a = −32/4 = (−8)
ZW = ( −∞, −8>

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