How do you solve #3x^2-6=282#?

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Answer 1 · 2016-08-07T13:46:57

#x=+-4sqrt6#

#3x^2-6=282#
or
#3x^2=282+6#
#3x^2=288#
or
#x^2=288/3#
or
#x^2=96#
or
#x=sqrt96#
or
#x=+-4sqrt6#

Answer 2 · 2016-08-07T13:50:44

#x = +-4sqrt6#

Although this is a quadratic equation, there is no #x# term, so we can use a different method of solving it without making everything equal to 0.

#3x^2 = 288#

#x^2 = 96#

#x = +-sqrt96#

#x = +-sqrt(2xx2xx2xx2xx2xx3)#

#x = +-4sqrt6#