Question

2sqrt50 - 3sqrt125 +sqrt98

Answer 1

\[2\sqrt{50} = 2\sqrt{25\times2} = 10\sqrt{2}\]

\[3\sqrt{125} = 3\sqrt{25\times5} = 15\sqrt{5}\]

\[\sqrt{98} = \sqrt{49\times2} = 7\sqrt{2}\]

now collect the like terms tp get the answer