kaleykaley
kaleykaley
14-04-2019
Mathematics
contestada
Answer!!!!!!!!!!!!!and explain plz
Respuesta :
jackie3811
jackie3811
14-04-2019
D
add 49 to both sides to get x by itself
x^2 - 49 = 0
+49 +49
square root both sides to get rid of the square
√x^2 = √49
x= ±7
since both -7 and 7 are square roots to 49, it’s D
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