October 2018 1 12 Report

Wykonaj działania.

a) (x - 1 )(x + 1)

b) (1 + 3ab)(1 - 3ab)

c) (1 -√2)(1 + √2)

d) (√7 + √3)( √7 - √3)

e) (2y + 3z)(2y - 3z)

f) (xy - mn)(xy + mn)

g) (√5 - 2)(√5 + 2)

h) (2√3 - 1)(2√3 + 1)


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