The value of the expression is 9.
In this question given, we have been given the equation and the values of the letters in the equation that is given. Since we are given the expression, g=2, r=3, and t=11, then we have to slot in the values into the equation and this will be:
r² + (g³ - 8) × 5
= 3² + (2³ - 8) × 5
= 9 + [(8 - 8) × 5]
= 9 + (0 × 5)
= 9 + 0
= 9
Therefore, based on the calculations above, the answer is 9.
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