Cutiepo0 3 years ago SImplify: ³/16 + ³/54 (Third root of 16 + third root of 54)

1. Cutiepo0

$\sqrt[3]{16}+\sqrt[3]{54}$

2. amistre64

3rt(16) + 3rt(54) might be easier to write :)

3. Cutiepo0

Thanks :)

4. amistre64

to add them you need to get like terms under the radicals

5. Cutiepo0

how do I do that?

6. amistre64

like factors if you will

7. amistre64

hmmm, try converting to exponents and see if we can play with those maybe?

8. amistre64

$16^{1/3}+54^{1/3}$ hmm

9. Cutiepo0

so like: $16^{1/3} + 54^{1/3}$

10. jimmyrep

= 3rt (8*2) + 3rt(27*2) = 2 3rt2 + 3 3rt2 = 5 3rt2

11. amistre64

4*4 = 16 that aint it 9*6 = 54 .... thatll do it

12. amistre64

not mine; jimmys lol

13. amistre64

might help if I could recall the perfect cubes :/

14. Cutiepo0

THanks jimmy's was right, but I don't know how he too hte 2 and the 3 from under the radical sign???

15. Cutiepo0

how he took the**

16. Cutiepo0

oh! never mind thanks :)