anonymous
  • anonymous
x^(2)10^x-2x(10^x)=3(10^x) solve equation..
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
10^x(x^2 -2x -3) =0 x=1,-3
anonymous
  • anonymous
can you walk me through it please
anonymous
  • anonymous
that was wrong

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anonymous
  • anonymous
x^(2)10^x-2x(10^x)=3(10^x)
anonymous
  • anonymous
Factor out 10^x then solve like any other quadratic equation
anonymous
  • anonymous
so 10^x(x^2-2x)=3(10^x)?
anonymous
  • anonymous
Bring LHS and RHS to same side and solve quadratin x^2 -2x -3
anonymous
  • anonymous
bring what?
anonymous
  • anonymous
all terms to one side
anonymous
  • anonymous
so 10^x(x^2-2x-3)=0
anonymous
  • anonymous
?
anonymous
  • anonymous
Yep now you have it factorize quadratic and 10^x gives no roots as it is always greater than zero
anonymous
  • anonymous
so final answer is -1,3
anonymous
  • anonymous
1,-3
anonymous
  • anonymous
no -1,3 ...why u get 1,-3?
anonymous
  • anonymous
YEah it was a test

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