akar529-akar169*akar9+12kuadrat:4kuadrat

akar 529=23
akar 169=13
akar 9=3
12²=144
4²=16

23-13*3+144:16
23-39+9
=-7

= akar529 - 13 x 3 + 3kuadrat
= 23 - 39 + 9
= -16 + 9
= -7