Expand \( (x + 5y)^4 \).
University of Ilorin MTH101 salang past question
- \(x^4 + 20x^3y + 150x^2y^2 + 500xy^3 + 625y^4\)
- \(x^4 + 10x^3y + 75x^2y^2 + 250xy^3 + 625y^4\)
- \(x^4 + 15x^3y + 100x^2y^2 + 300xy^3 + 625y^4\)
- \(x^4 + 25x^3y + 125x^2y^2 + 500xy^3 + 625y^4\)
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