sprawdź wyrażenie dla x=3 i y=-1
2(x - 3y)² - 3(x - 2y) (x+2y) +12x
2(x - 3y)²- 3(x - 2y) (x+2y) +12x = 2(9+9) - 3(3+2)(3-2) + 12*3= 18 +18 -3(9-4) +36= 36 - 27 +12 + 36= 57
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sprawdź wyrażenie dla x=3 i y=-1
2(x - 3y)²- 3(x - 2y) (x+2y) +12x = 2(9+9) - 3(3+2)(3-2) + 12*3= 18 +18 -3(9-4) +36= 36 - 27 +12 + 36= 57