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OpenStudy (anonymous):
how to solve f(x)=2x^2-10 find f(5)
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hartnn (hartnn):
to get f(5) just plug in x=5 in f(x) !
hartnn (hartnn):
so, what you get 2x^2-10 =2(5)^2-10 = ... ?
OpenStudy (anonymous):
would it be 90
hartnn (hartnn):
nopes, 5^2 = 25 2*25 = 50 50 -10 =40 it would be 40 :)
OpenStudy (anonymous):
ok thx for the help
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hartnn (hartnn):
welcome ^_^
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