(x-9)^2=49 How do I undo the squaring?
ask maxwong
maxwong answer me plz
Yay time for the rescue!!
\((x-9)^2=49\\ \sqrt{(x-9)^2}=\pm \sqrt{49}\\ x-9 = \pm 7 \\x = 16 \;or\; x = 2\)
Check: (16-9)2 = 72 = 49
(2-9)2 = (-7)2 = 49
