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

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

User Ash Das
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1 Answer

3 votes
k = 7.

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

hope it helps :)
User Limekin
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7.9k points
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