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  • 16-01-2018
  • Mathematics
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The function f(x)= x^2+ 3x- 10. If f(x+5)= x^2+ kx+ 30, what does k equal?

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aroshiayub
aroshiayub aroshiayub
  • 16-01-2018
k = 7.

if you simplify with x=x+5, you get x^2 +7x +30

hope it helps :)
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