Question

4√2 +1 +5√2+1 -21+7√2
Ajutor!

Answer 1

4√2 +1 +5√2+1 -21+7√2=
√2(4+5+7)-19=
16√2-19

Answer 2

$4\sqrt{2}+1+5 \sqrt{2} +1-21+7 \sqrt{2}= \\ \\ 4 \sqrt{2}+5 \sqrt{2} +7\sqrt{2}+1+1-21= \\ \\ =16\sqrt{2}+1+1-21\\ \\ =16 \sqrt{2} -19 \\ \\ 4 \sqrt{2}+1+5 \sqrt{2} +1-21+7 \sqrt{2}=16 \sqrt{2} -19$