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b) 2(-2^2)-2^3 = 2*4 -8 = 8-8=0
c) 2(2^2) - (-2^3) = 2*4 -(-8) = 8+8=16
2 * 1² - 1³ = 2 * 1 - 1 = 2 - 1 = 1
b)
2 * (-2)² - 2³ = 2 * 4 - 8 = 8 - 8 = 0
c)
2 * 2² - (-2)³ = 2 * 4 - (-8) = 8 + 8 = 16