If m=13−2√2 then,m2= _______.
34
17−12√2
24√2
17+12√2
m=13−2√2
m=13−2√2×3+2√23+2√2
=3+2√2(3)2−(2√2)2
=3+2√29−8
=3+2√2
m2=(3+2√2)2
=(3)2+2(3)(2√2)+(2√2)2
=9+12√2+8
=17+12√2