Answer:
45
Explanation:
We are given the following expression: xy + 3
To evaluate when x = 6 and y = 7, we replace x by 6 and y by 7. So
6*7 + 3 = 42 + 3 = 45
x = 8 and y = 10
4x² + 5y³ = 4*(8)² + 5*(10)³ = 4*64 + 5*1000 = 256 + 5000 = 5256
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