Let f(x) = 2- x^2 and g(x) = x^2 -2. How do you solve f(x) = g(x) ?

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Answer 1 · 2015-09-29T01:04:22

#x=+-sqrt(2)#

If #f(x)=g(x)# then #2-x^2=x^2-2#

and #4=2x^2#

#2=x^2#

Therefore,

#x=sqrt(2), x=-sqrt(2)#

Hope this helps :)