Question

NEED HELP FAST
Find the product of (2x + 5y)2.

4x2 + 20xy + 25y2

4x2 − 20xy + 25y2

4x2 − 25y2

4x2 + 25y2

Answer 1

this expansion is applicable \[\large (a+b)^2=(a)^2+2(a)(b)+(b)^2\]
where \[\large a = 2x; \space b=5y\]

Answer 2

i know

Answer 3

i was thinking it was D but a and b confused me