Question

If (x-7) is the factor of (x²-k) then the value k is

Answer 1

x-7=0

x=7

x^2-k=0

(7)^2-k=0

49-k=0

k=49

Answer 2

Answer:

Step-by-step explanation:

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If x-7=0

x=7

Now

F(x) = x^2-k=0

f(7)=( 7)^2-K=0

f(7)=49-k=0

f(7)=-k=-49

f(7)= 《| k=49|》

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