Zadanie w załączniku.
Proszę o pomoc, to ważne. :)
S = a² - 1/2 * (a-2b) * (a-b) = a² - 1/2 (a² - ab - 2ab + 2b²) =0,5a² - 1,5ab + b²
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S = a² - 1/2 * (a-2b) * (a-b) = a² - 1/2 (a² - ab - 2ab + 2b²) =0,5a² - 1,5ab + b²