Question

What are the solutions to the equation x² = 169?

Choose all answers that are correct.

A.
13

B.
–13

C.
84.5

D.
–84.5

Answer 1

what do you think?

Answer 2

square root both sides
sqrt(x^2)=sqrt(169)
x=13

Answer 3

\[x^2=169\]
\[\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\]
\[x=\sqrt{169},\:x=-\sqrt{169}\]
\[x=13,\:x=-13\]

Answer 4

@Spicytaco1 are you understand