2 zadania:
1. Dane jest równanie ax - b = cx + a , gdzie . Zatem:
a). x = b + a / ac
b). x = b + a / a - c
c). x = a - b / ac
d). x = a - b / a - c
2. Wielomian W (x) = x³ - x² - x + 1 można przedstawić w postaci:
a). W (x) = (x-1)² (x+1)
b). W (x) = x² (x-1)
c). W (x) = (x+1)² (x-1)
d). W (x) = x² (x+1)
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zad 1
ax - b = cx +a
ax - cx = a +b
x(a-c) = a + b /: (a-c)
a+b
x = --------
a-c
odp. B
zad 2
W(x) = x³ - x² - x + 1
W(x) = x²(x-1) - (x-1)
W(x) = (x-1) (x² -1)
W(x) = (x-1)(x-1)(x+1)
W(x) = (x-1)²(x+1)
Odp A