Prosze o rozwiazanie i wytlumaczenie zadania:
2y² - (y+12)(2y+3) = 18
2y² - (2y² + 3y + 24y + 36) = 18
2y² - 2y² - 3y - 24y - 36 = 18
- 27y = 18 + 36
- 27y = 54
y = - 2
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2y² - (y+12)(2y+3) = 18
2y² - (2y² + 3y + 24y + 36) = 18
2y² - 2y² - 3y - 24y - 36 = 18
- 27y = 18 + 36
- 27y = 54
y = - 2