csat-suneung 2010 Q19

csat-suneung · South-Korea · csat__math-science 3 marks Solving quadratics and applications Solving an equation via substitution to reduce to quadratic form

Find the product of all real roots of the irrational equation $\sqrt { x ^ { 2 } - 7 x + 15 } = x ^ { 2 } - 7 x + 9$. [3 points]

Find the product of all real roots of the irrational equation $\sqrt { x ^ { 2 } - 7 x + 15 } = x ^ { 2 } - 7 x + 9$. [3 points]