Question

please solve these both
please
I wI'll mark you as BRAINLIEST​

Answer 1

Answer:

Step-by-step explanation:

1). (4x+10y)^2

•(4x)^2+(10y)^2+2×4x×10y

•16x^2+100y^2+80xy

•16x^2+80xy+100y^2

2). (7x-2y)(7x-2y)

•(7x-2y)^2

•(7x)^2-2×7x×2y+(2y)^2

•49x^2-28xy+4y^2

Answer 2

Answer:

first mark me as brainlists plz