November 2021 1 2 Report
Вычислите наиболее рациональным способом:
1) 0,756² - 0,241∙0,756 – 0,415∙0,756;
2) 0,25²∙2,4 + 0,25∙2,4² - 0,25∙0,24∙0,65;
3) 2,49∙1,63 -2,12∙1,63 +1,63²;
4) 0,16∙6,41∙1,25 - 0,16∙1,25² - 0,16²∙1,25.
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