2 Oblicz wartość wyrażenia x - 4X:
x²-4x
a)x=1
1²-4*1 = 1-4 = -3
b)x=5
5²-4*5 = 25-20 = 5
c)x=-3
(-3)²-4*(-3) = 9-(-12) = 21
a) dla x=1
b) x=5
c) dla x=-3
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x²-4x
a)x=1
1²-4*1 = 1-4 = -3
b)x=5
5²-4*5 = 25-20 = 5
c)x=-3
(-3)²-4*(-3) = 9-(-12) = 21
a) dla x=1
b) x=5
c) dla x=-3