Find value

Algebra Level 2

The cube of a number equals 27 find the square of this number


The answer is 9.

Luna T by luna T , 16, Egypt

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3 solutions

Hana Wehbi
Oct 9, 2018

x 3 = 27 ⟹ x = ( 27 ) 1 3 ⟹ x = 3 ⟹ 3 2 = 9 x^3=27\implies x=(27)^{\frac{1}{3}}\implies x=3 \implies 3^2=9

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Let x x be the number. Then,

x 3 = 27 x^3 = 27

x 3 = 3 3 x^3 = 3^3

x = 3 x=3

The square of that number is

x 2 = 3 2 = 9 x^2=3^2=\large{\boxed{9}}

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Aryan Gupta
Oct 10, 2018

Level 2!!! oh GAWD

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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