1.The value of the expression -2x^2 + 4 when x = 1 is -2 * 1^2 + 4 = -2 + 4 = 2.
2.The value of the expression 59 / 9^3 when a = 3 is 59 / 3^3 = 59 / 27 = 2.
3.The value of the expression 2m^2 - 6mt + 8 when m = -2 is 2 * (-2)^2 - 6 * (-2) * t + 8 = -8 - 12t + 8 = -12t. The value of the expression depends on the value of the variable t. Without knowing the value of t, it is impossible to determine the exact value of the expression.
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Answer:
1.The value of the expression -2x^2 + 4 when x = 1 is -2 * 1^2 + 4 = -2 + 4 = 2.
2.The value of the expression 59 / 9^3 when a = 3 is 59 / 3^3 = 59 / 27 = 2.
3.The value of the expression 2m^2 - 6mt + 8 when m = -2 is 2 * (-2)^2 - 6 * (-2) * t + 8 = -8 - 12t + 8 = -12t. The value of the expression depends on the value of the variable t. Without knowing the value of t, it is impossible to determine the exact value of the expression.