Question

Fill in the blanks :

1) Degree of the polynomial (x2-1) (x2+x+2) is

2) (AnB)=

3) A-(BUC) =

4) If P(- b/a )=0 then _____
is a factor of P(x)

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Answer 1

Step-by-step explanation:

01. let P(x) = (x^2-1) (x^2+x+2)

=x^4+x^3+2x^2-x^2-x-2

=x^4+x^3+x^2-x-2

highest power is 4.

so degree of poly. = 4.ans

02. If the two events A and B are independent, then P(A∩B) = P(A) P(B). If the events are not independent (dependent), then P(A∩B) = P(A|B) P(B)

or

P(A intersected with B)=P(A)+P(B)-P(A union with B)

03. A-(BUC) = (A-B) ∩ (A-C)

04. (ax+b) is a factor of p(x), if p(-b/a) =0. ans