November 2018 1 94 Report

Temat z wyliczania delty, x1 i x2.

wzor na obliczanie delty: b2 - 4ac

x1 = -b - delta/2a

x2 = -b + delta/2a

a) y2 − 2y + 1 = 1/4

b) y2 − 0,2y + 0,03 = 0,02

c) 5x2 − 4 = 2(x2 − 2)

d) 15x(x−3) = 4x(3−x)

e) (x+4)2 + (x−1)2 = 17

2.Określ liczbę pierwiastków równania:

a) x2 − πx + 2 = 0

b) x2 − 3x + √2 = 0

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