Question

evaluate the expression x^-2 if x=7

Answer 1

thats not the way I'm doing it in class i wish it were tho

Answer 2

thank you anyway

Answer 3

iThink its 12...

Answer 4

how did you get that

Answer 5

negative exponent means reciprocal
x^-2 =1/x^2 so \[\frac{ 1 }{ 7^2 }=\frac{ 1 }{ 49 }\]

Answer 6

oh wait daym hold up .....7^2=49
then 49-2=47

Answer 7

so it turns out to be 49?

Answer 8

1/49

Answer 9

ok i see thank you do u think you could help me with some more problems or no