Question

help me plz

Answer 1

question 1
\[10\sqrt{7}+\sqrt{7}+6\sqrt{19}\]

Answer 2

question 2.
\[5\sqrt{2}-2\sqrt{2}-\sqrt{5}\]

Answer 3

question 3.
\[\left( 4x ^{2}+2x ^{2}-9x+4 \right)-\left( 2x ^{3}-4x ^{2}-3 \right)-\left( 6x+2 \right)\]

Answer 4

for question 1 is it \[11\sqrt{7}+6\sqrt{19}\]

Answer 5

for question 2 is it \[3\sqrt{4}-\sqrt{5}\]