[Solved] Use real variable algebra to simplify the following expressions. -\[( 4 - x ) ( 1 + x )\] Respiratory Distress Syndrome: A medical condition often occurring in premature infants, characterized by difficulty breathing due to underdeveloped lungs. Teratogens: Factors or agents responsible for causing congenital defects or developmental problems in an embryo or fetus. Preterm Infants: Babies born before 37 weeks of gestation, often facing various health challenges due to underdevelopment. Parental Behavior: Parental behavior includes the actions and responses adopted by parents in the process of raising and nurturing their children.