Question

Determine the value of ‘a’when (x+3) is a factor of the polynomial p(t)=at^3+t^2-22t-21.​

Answer 1

Answer:

we have to find the value of a so we have to replace t with -3 .

Step-by-step explanation:

x+3=0

x=-3

replace t by -3

a(-3)^3 + (-3)^2-22(-3) - 21

-27a + 9 + 66 -21

-27a + 52

-27a = -52                             we will move -52 to left hand sign

a = -52\-27

a= 1.9

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