3 а² -2d³ при а =-17 , b =-2

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To find the value of the expression 3a² - 2b³ at a = -17 and b = -2, we simply substitute these values into the expression:

3(-17)² - 2(-2)
= 3(289) - 2(-8
= 867 + 1
= 883

Therefore, the value of the expression 3a² - 2b³ when a = -17 and b = -2 is 883.