If X & sup2; - 4Y & sup2; = - 15,2y-x = 3, then x + 2Y=______ . ..

If X & sup2; - 4Y & sup2; = - 15,2y-x = 3, then x + 2Y=______ . ..

∵x²-4y²
=(x+2y)(x-2y)
=-15
And ∵ 2y-x = 3
∴-(x-2y)=3,x-2y=-3
∴x+2y=-15/(x-2y)=(-15)/(-3)=5

Elden Ring Premiere

RELATED INFORMATIONS