Question

radicals help plz

Answer 1

correction
\[x \sqrt{11x} + 2\sqrt{7}\]

Answer 2

\[2\sqrt{44x ^{3}} - \sqrt{7} - \sqrt{99x ^{3}} + \sqrt{63}\]
can be rewritten as
\[2*2x \sqrt{11x} - \sqrt{7} - 3x \sqrt{11x} + 3\sqrt{7}\]
= \[ 4x \sqrt{11x} - \sqrt{7} - 3x \sqrt{11x} + 3\sqrt{7}\]
combining like terms yields the reduced format
\[x \sqrt{11x} + 2\sqrt{7}\]