Question

wich of the numbers listed below are solutions to the equation x2=49

a. -7
b.2401
c.24.5
d.7
e.14
f.-14 ?? so confused help pla can some one explain this one ?

Answer 1

replace x with each one of those and see if you get a true statement....

Answer 2

\[x^2=49\]
square both sides
\[\sqrt{x^2}=\sqrt{49}\]
\[x=7\]

Answer 3

sorry
\[x=\pm7\]