1. By how much does the expression 5x3 + y2 lesser than 5y2 + x3if x = 2 and y = 3?
Correct answer is option - 4
Explanation: When x = 2 and y = 3, 5x3 + y2 = 5(2)3 + 32 = 40 + 9 = 49
And, 5y2 + x3 = 5(3)2 + 23 = 45 + 8 = 53.
Therefore the difference is 53 – 49 = 4.