5X^2+8X+2=0X^2+8X/5=-2/5X^2+8X/5+16/25=-2/5+16/25=6/25(X+4/5)^2=6/25X+4/5=±√6/5X=(-4-√6)/5,X=X=(-4+√6)/5(X+4/5)^2=6/25X+4/5=±√6/5X=(-4-√6)/5,X=X=(-4+√6)/5