October 2018 1 47 Report

1. Uprość wyrażenia.
b. (m+1)^2 - (2m - 2)^2 + (2m +3)^2 - (4m - 4)^2
c. 9^2 - (1-x)(2+x) - 3(5-x)^2
d. 2(3-x)(1+x) - (1-2x)^2 + (-2 - x)^2

2. Oblicz za pomocą wzorów skróconego mnożenia:
a. 19^2

b. 101 * 99


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