Question

help!!!!!!!1

Answer 1

If x is the principal square root of 7, what must be true?

Answer 2

A. x = 7^2, and x is negative

Answer 3

B. x^2 = 7, and x is negative

Answer 4

C. x^2 = 7, and x is positive

Answer 5

D. x = 7^2, and x is positive

Answer 6

What do you think? Maybe try to prove them wrong, by finding a counter-example.

Answer 7

i think D

Answer 8

As an example:
A. x = 7^2, and x is negative
\[7^2=49\]Is always a positive number, so in order for \[x=49\] It has to be positive, not negative.

Answer 9

Yeap, that is correct :)

Answer 10

thank you tommy

Answer 11

49 positive