Question

expand (2×+5y)² tell me​

Answer 1

Answer:

(2x)^2+2×2x×5y+(5y)^2

Answer 2

Answer:

4x²+20xy+25y²

Step-by-step explanation:

(2x+5y)²

The formula (a+b)²=a²+2ab+b²

Here a=2x

b=5y

According to formula (2x)²+(2×2x×5y)+(5y)²

4x²+20xy+25y²