anonymous
  • anonymous
If f(x) = 3xsquared - x + 2 (Sorry I don't know how to make the squared number) Then what is 2f(a) please show work
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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yuki
  • yuki
\[f(x) = 3x^2 -x +2\] in order to find 2f(a) the only thing you have to do is literally substitute x with a, and then multiply 2 later
yuki
  • yuki
so \[f(a) = 3a^2 -a +2\]
anonymous
  • anonymous
0.332

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yuki
  • yuki
and \[2f(a) = 2(3a^2-a+2)\] so \[2f(a) = 6a^2-2a+4\]
yuki
  • yuki
and if you want to indicate that a number is taken to the nth power you put a^n which is\[a^n\]
yuki
  • yuki
it's the same as a calculator :P
anonymous
  • anonymous
ok thanks much!

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