Find the Sum of The Coefficients of (5x^2 - 3y)^2022 | Olympiad Math

To find the sum of the coefficients of all terms of (5x^2-3y)^2022, we use the binomial formula for the analysis and replace both x and y with 1 to get the answer.

[sadeekmuhammadryan]

Thanks Sir. But how can I be sure that this is the answer? I mean, how does replacing x and y by 1 give us the sum of all coefficients in the expansion? Can we prove it? It would be a great help if you kindly make it understand.

[parthpanchal]

We can use pascals triangle, would be faster .