Question

simplify each of the following first part root 63 - 5 root 28 + 11 root 7

Answer 1

$\sqrt{63} - 5 \sqrt{28} + 11 \sqrt{7} \\ = 3 \sqrt{7} - 10 \sqrt{7} + 11 \sqrt{7 } \\ = 4 \sqrt{7}$