Question

(4√5x-√15y)(4√5x+√15y) =...
DAU 8 CORONITEEE PROMITTT!!!

Answer 1

(4√5x-√15y)(4√5x+√15y) =(folosim (a-b)(a+b)=ala a 2-b la a 2
16*5$x^{2}$ -15$y^{2}$
80$x^{2}$-15$x^{2}$