cant solve this problem...

This sounds really simple but not really:

(4x)^3 = 9^6

Could you please help? I tried this problem. Here are the steps i took:

64x^3 = 9^6

64x^3 = (3^2)^6

64x^3 = 3^12

64x^3 = 531441

Divide by 64 on each side, and you get:

x^3 = 8303.765625

Then the cube root of 8303.765625 is taken:

x = 20.25

I hope i did this right...

Thanks for all your help! ;)

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