Question

daca x²- y² = 48 si x-y=6 , calculati 3( x+y)

Answer 1

FORMULA
(x+y)(x-y)=x^2-y^2
(x+y)*6=48
x+y=48:6
x+y=8

3(x+y)=3*8=24

Answer 2

[tex] x^{2} - y^{2} = 48 (x-y)(x+y)=48 6(x+y)=48 3(x+y)=24 x+y=8 x-y=6 2x=14 x=7 2y=2 y=1 3(x+y)=24[/tex]