expand (x/2-3y+5)^2
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x^10 + 15(x^8)y + 90(x^6)y²+ 270(x^4)y³ + 405x²y^4 + 243y^5
Step-by-step explanation:
(x²+3y)^5
= x^10 + 5(x^8×3y) + 10(x^6×9y²) + 10(x^4×27y³) + 5(x²×81y^4) + 243 y^5
= x^10 + 15(x^8)y + 90(x^6)y²+ 270(x^4)y³ + 405x²y^4 + 243y^5.
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