Equations, SM-Bank 065 Solve the quadratic equation \(x^2-1=48\) for \(x>0\). (2 marks) --- 4 WORK AREA LINES (style=lined) --- Show Answers Only \(x=7\) Show Worked Solution \(x^2-1\) \(=48\) \(x^2\) \(=48+1\) \(x^2\) \(=49\) \(\sqrt{x^2}\) \(=\sqrt{49}\) \(x\) \(=\pm7\) \(\therefore\ \text{Since}\ x>0\ \ x=7\)