Question

3^2+b^2=4^2
I ended up with
b^2=7
b=sq rt 7

Answer 1

+ or - sqrt()7

Answer 2

(-x)^2 = x^2
(x)^2 = x^2

+ or - for those

Answer 3

yes u r absolutely correct keep it up :
transpose 2^2 to right hand side
b^2 = 4^2-3^22
\[b^2=4^2-3^2\]
\[b^2=16-9\]
or
\[b^2=(4+3)(4-3)\]
\[b^2=7\]
\[b=sqrt7\]

Answer 4

got it

Answer 5

Thanks

Answer 6

a medal would be gr8 kylie