Question

CALCULATI : (4√2-√8)*√2

Answer 1

(4√2-√8 )*√2
Desfacem paranteza:
4√2 *√2-√8*√2
8-4=4
 

Answer 2

$(4 \sqrt{2}- \sqrt{8})* \sqrt{2}= \\ \sqrt{8}=2 \sqrt{2} \\ (4 \sqrt{2}-2 \sqrt{2})* \sqrt{2}=2 \sqrt{2}* \sqrt{2 } =2 \sqrt{4}$
$2 \sqrt{4}=2*2=4 \\ \sqrt{4}=2$