Question

please answer my question.....​

Answer 1

Hii..

Answer is in attachment.

Hope this helps !

Answer 2

GIVEN

P(x) = ax^3 + x^2 - 2x + 4a - 9

g(x) = x + 1

g(x) is a factor of p(x)

TO FIND :- The value of a

SOLUTION

According to Factor Theorem

If x + 1 is a factor of p(x) then if we substitute its zero in p(x) the resultant value of p(x) will be equal to zero.

x + 1 = 0

=> x = -1

Now if we put x = -1 in p(x) then the resultant value of the polynomial will be zero.

p(x) = ax^3 + x^2 - 2x + 4a - 9

p( - 1) = a (-1)^3 + (-1)^2 - 2 (-1) + 4a -9 =0

- a + 1 + 2 + 4a - 9 = 0

=> 3a - 6 = 0

=> a - 2 = 0

=> a = 2

HENCE THE VALUE OF a is 2