Question

Which numbers are perfect cubes? 1, 3, 6, 8, 21, 64

Answer 1

1,8,64

Explanation:

if you prime factor them you can see if they are perfect cubes

so 1, 1 to the anything is still 1 so 1 so ✅

for 3, 3 is a prime number so ❌

For 6, 6 is 2(3) that’s not a perfect cube so ❌

For 8, 8 is. 2³ so 8✅

for 21 3(7) thats not a perfect cube so ❌

for 64, 64 is 4³ so ✅

so the one that’s are perfect cubes are

64,8,1

Answer 2

my computer works! 1, 8, and 64

Explanation:

1x1x1=1

2x2x2=8

4x4x4= 64

i learned this earlier in the school year in algebra. hope this helps.