If x-7 is a factor of p(x) = x^3- 9x^2 +kx + 693 then find the value of k
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Answered by
5
p (-7) = (-7)^3 - 9(-7)^2 + k(-7) + 693
(-343) - (-441) - 7k + 693 = 0
98 - 7k + 693 = 0
98 - 7k = (-693)
7k = (-693) - 98
7k = (-791)
k = (-791)/7
k = (-113)
Hope it helps you
(-343) - (-441) - 7k + 693 = 0
98 - 7k + 693 = 0
98 - 7k = (-693)
7k = (-693) - 98
7k = (-791)
k = (-791)/7
k = (-113)
Hope it helps you
Answered by
0
The answer:-
K= -85
If x-7 is a factor of x^3-9(x^2)+xk+693
Put value of X = 7
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