Question

expand this (2x+5y)²​

Answer 1

Here you go it will help

Answer 2

Answer:

4x^2+20xy+25y^2

Step-by-step explanation:

(2x+5y)^2

a=2x ,b=5y

(a+b) ^2=a^2+2ab+b^2

=(2x)^2+2×2x×5y+(5y)^2

=4x^2+20xy+25y^2