anonymous1813
06.10.2021 •
Mathematics
6y-(8y/2)+4 explain this algebraic expression
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Ответ:
g[f(x)] - subtitute 2x - 3 to g(x) instead x:
g[f(x)] = g(2x - 3) = (2x - 3)² - 1 /use (a - b)² = a² - 2ab + b²/
= (2x)² - 2·2x·3 + 3² - 1 = 4x² - 12x + 9 - 1 = 4x² - 12x + 8
g[f(x)] = 4x² - 12x + 8.