Question

what is coefficient of (x+y)² in expansion of x²y²?​

Answer 1

Answer:

${x}^{2} {y }^{2} = \frac{ (x + y) ^{2}}{2} - \frac{ {x}^{2} }{2} - \frac{ {y}^{2} }{2}$

Step-by-step explanation:

hence the coefficient is 1/2