Which of the following is the simplified form ofthe seventh root of x times the seventh root of x times the seventh root of x ?
a. x to the 3 over seventh power
b. x to the 1 over seventh power
c. x to the 3 over 21st power
d. the 21st root of x

Respuesta :

Answer:

[tex]x^{\frac{3}{7} }[/tex]

Step-by-step explanation:

We want to simplify

[tex]x^{\frac{1}{7} }\times x^{\frac{1}{7} } \times x^{\frac{1}{7} }[/tex]

Recall that,

[tex]a^m\times a^n=a^{m+n}[/tex]

So weneed to write one base and add the exponents,

[tex]x^{\frac{1}{7} }\times x^{\frac{1}{7} } \times x^{\frac{1}{7} }= x^{\frac{1}{7}+\frac{1}{7}+\frac{1}{7}}[/tex]


We collect LCM in the exponent to get,

[tex]x^{\frac{1}{7} }\times x^{\frac{1}{7} } \times x^{\frac{1}{7}}= x^{\frac{1+1+1}{7}[/tex]

We simplify to obtain,

[tex]x^{\frac{3}{7}}[/tex]

The correct answer is A.


The correct answer is a