Question

plz answer this fast ​

Answer 1

HOPE IT HEALPS .....

MARK BRAINLIST

Answer 2

(2x-5y)(2x+5y)+(x+4y)^2=
(2x × 2x-5y × 5y) + (x^2 +(4y)^2 +2 × x × 4y)=
( 4(x^2)-25(y^2) ) +( x^2 +16(y^2)+8xy) =
5(x^2)-9(y^2)+8xy