Question

11. If x^2-1 is a factor of ax^3 +bx^3+cx+d, show that a+c= 0.​

Answer 1

Answer:

(x^2)-1=(x+1)(x-1)...so

Step-by-step explanation:

-a-b-c+d=0....if (x+1) is the factor .......a+b+c+d=0 if (x-1) is the factor therefore d equals to zero and further equating we get a +c = 0

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