urgent svp 3 racine de 2 plus racine de 98

3√2 + √98 =

3√2+√49*√2 =

3√2+7√2 =  10√2

3√2 + √98
= 3√2 + √(49 x 2)
= 3√2 + √49 x √2
= 3√2 + 7 x √2
= 3√2 + 7√2
= (3 + 7)√2
= 10√2