How can i solve 3x^2 = 48 ?

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Answer 1 · 2018-02-27T05:28:33

#x = +-4#

#3x^2 = 48# Solve for #x#

1) Divide both sides by #3# to isolate #x^2#

#x^2 = 16#

2) Find the square roots of both sides

#sqrt(x^2) = sqrt(16)#

# x = +-4# #larr# answer

#"Answer#
#x = +-4#

Check

Do the problem in reverse to see if you bring back the original equation

#x = + 4#
#x^2 = 16#
#3x^2= 48# ✓

#x = - 4#
#x^2 = 16#
#3x^2 = 48# ✓

#Check#