Question

(5x-4y+1)'2 + (5x4y)'2 simplify pls answer​

Answer 1

Step-by-step explanation:

(3x+2y)^2+(5x-4y)^2

=(3x)^2 + (2y)^2 +2(3x)(2y) +(5x)^2+(-4y)^2 -2(5x)(4y)

=9x^2+4y^2+12xy+25x^2+16y^2-40xy

=34x^2+20y^2-28xy

please tell it is right