Question

(5l+ 3m-4n)^2 pls answer this for me it's urgent​

Answer 1

Answer:

25l^2+9m^2+16n^2+30ml-24mn-40nl

Step-by-step explanation:

=(5l)^2+(3m)^2+(-4n)^2+2(5l)(3m)+2(3m)(-4n)+2(-4n)(5l)

=25l^2+9m^2+16n^2+30ml-24mn-40nl is the answer...

PLEASE MARK IT AS A BRAINLIEST ANSWER...