Question

What is the coefficient of x^3 y^2 in the expansion of (2x+y)^5​

Answer 1

Answer:coefficient of x³y²=80

Explanation:

using pascal triangle to expand we get

(2x+y)⁵=32x⁵+80x⁴y+{80x³y²}+40x²y³+10xy⁴+y⁵

the one in bracket is the answer so the coefficient of x³y²=80