Rewrite the radical expression as an expression with a rational exponent. the seventh root of x to the third power

options:

a: x to the three sevenths power
b: x to the seven thirds power
c: x21
d: x4

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

7,24

step-by-step explanation:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8